Sea weather in Guam (Marianas) in Micronesia All the beach weather in Guam (Marianas)

All the essential weather information for enjoying the beach in Guam (Marianas) in Micronesia, for swimming, tanning or water sports! Our sea weather data is reliable, easy to read and updated every day.

Weather: When should you go to the beach in Guam (Marianas) over the next 7 days?

Discover the best moment to go to the beach in Guam (Marianas) in Micronesia this week to enjoy the best weather and calmest sea possible. Our opinion is based on reliable sea weather forecasts in Guam (Marianas). You can see full forecasts by clicking on the day you want to see in the table below.

Date Outside temp. Our opinion
Saturday 18 July 202683°F to 85°Fdiscouraged
Sunday 19 July 202677°F to 83°Frecommended
Monday 20 July 202683°F to 85°Frecommended
Tuesday 21 July 202681°F to 83°Frecommended
Wednesday 22 July 202681°F to 83°Frecommended
Thursday 23 July 202677°F to 81°Fdiscouraged
Friday 24 July 202681°F to 83°Fnot recommended

Sea Weather: Your daily and hourly sea weather in Guam (Marianas)

Sea weather on Saturday 18 July 2026

On Saturday 18 July 2026, the sun will rise at 06:03 and will set at 18:52 on the beach(es) of Guam (Marianas). The outside temperature will be a high of 85°F t and a low of 83°F. Precipitation is in the forecast (0.1in throughout the day): choose the right time to go to the beach and dodge the raindrops. The sea will be generally calm, with a wind speed of up to 13.1mph km/h (with gusts up to 19.3mph). Wave height will be up to 3.9ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature28°C (83°F)28°C (82°F)28°C (82°F)28°C (83°F)28°C (82°F)28°C (83°F)29°C (83°F)28°C (83°F)
Perceived temperature33°C (91°F)32°C (90°F)32°C (89°F)33°C (91°F)32°C (89°F)33°C (91°F)33°C (92°F)33°C (91°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity81%82%81%79%78%78%79%80%
Barometric pressure1008 hPa1007 hPa1008 hPa1009 hPa1008 hPa1007 hPa1007 hPa1009 hPa
Cloud cover50%33%49%49%38%40%55%43%
Heat index33°C (91°F)32°C (90°F)32°C (89°F)33°C (91°F)32°C (89°F)33°C (91°F)33°C (92°F)33°C (91°F)
Dew point25°C (76°F)24°C (76°F)24°C (76°F)24°C (76°F)24°C (75°F)24°C (75°F)24°C (76°F)24°C (76°F)
Wind
Speed21km/h (13mph)18km/h (11mph)19km/h (12mph)19km/h (12mph)19km/h (12mph)19km/h (12mph)18km/h (11mph)19km/h (12mph)
Gusts31km/h (19mph)26km/h (16mph)27km/h (17mph)27km/h (17mph)28km/h (18mph)28km/h (17mph)25km/h (16mph)28km/h (17mph)
Direction 244°
WSW
246°
WSW
242°
WSW
238°
WSW
240°
WSW
232°
SW
228°
SW
229°
SW
Wind chill28°C (83°F)28°C (82°F)28°C (82°F)28°C (83°F)28°C (82°F)28°C (83°F)29°C (83°F)28°C (83°F)
Waves
Height1.2m (3.9ft)1.2m (3.9ft)1.2m (3.9ft)1.1m (3.8ft)1.1m (3.6ft)1.1m (3.5ft)1.0m (3.4ft)1.0m (3.3ft)
Direction 250°
WSW
249°
WSW
249°
WSW
250°
WSW
251°
WSW
252°
WSW
253°
WSW
255°
WSW
Period7.2 sec.7.1 sec.7.0 sec.9.1 sec.6.7 sec.9.0 sec.8.9 sec.6.4 sec.
Significant height0.6m (2ft)0.7m (2.3ft)0.6m (2ft)0.6m (2ft)0.5m (1.6ft)0.6m (2ft)0.5m (1.6ft)0.6m (2ft)
Sea water temperature
Water temperature27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)

Sea weather on Sunday 19 July 2026

On Sunday 19 July 2026, the sun will rise at 06:03 and will set at 18:52 on the beach(es) of Guam (Marianas). The outside temperature will be a high of 83°F t and a low of 77°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 11.2mph km/h (with gusts up to 15.5mph). Wave height will be up to 3.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)27°C (81°F)28°C (83°F)28°C (83°F)28°C (82°F)
Perceived temperature32°C (90°F)32°C (90°F)32°C (89°F)32°C (89°F)31°C (87°F)32°C (89°F)32°C (90°F)32°C (89°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity80%80%81%81%78%74%76%76%
Barometric pressure1009 hPa1008 hPa1009 hPa1010 hPa1009 hPa1008 hPa1008 hPa1009 hPa
Cloud cover44%45%53%33%18%17%31%67%
Heat index32°C (90°F)32°C (90°F)32°C (89°F)32°C (89°F)31°C (87°F)32°C (89°F)32°C (90°F)32°C (89°F)
Dew point24°C (76°F)24°C (75°F)24°C (75°F)24°C (75°F)23°C (74°F)23°C (74°F)24°C (75°F)23°C (74°F)
Wind
Speed18km/h (11mph)16km/h (10mph)13km/h (8mph)12km/h (7mph)13km/h (8mph)14km/h (9mph)15km/h (9mph)14km/h (9mph)
Gusts25km/h (16mph)23km/h (14mph)19km/h (11mph)18km/h (11mph)20km/h (12mph)21km/h (13mph)21km/h (13mph)21km/h (13mph)
Direction 236°
SW
241°
WSW
232°
SW
216°
SW
204°
SSW
212°
SSW
210°
SSW
197°
SSW
Wind chill28°C (82°F)28°C (82°F)28°C (82°F)28°C (82°F)27°C (81°F)28°C (83°F)28°C (83°F)28°C (82°F)
Waves
Height1.0m (3.4ft)1.0m (3.3ft)1.0m (3.4ft)1.0m (3.4ft)1.0m (3.4ft)1.0m (3.4ft)1.0m (3.4ft)1.0m (3.3ft)
Direction 257°
WSW
257°
WSW
256°
WSW
254°
WSW
251°
WSW
250°
WSW
249°
WSW
248°
WSW
Period6.4 sec.6.2 sec.6.2 sec.6.3 sec.6.4 sec.6.4 sec.6.5 sec.6.6 sec.
Significant height0.8m (2.6ft)0.7m (2.3ft)0.7m (2.3ft)1.1m (3.6ft)1.1m (3.6ft)1.1m (3.6ft)1.0m (3.3ft)1.0m (3.3ft)
Sea water temperature
Water temperature27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)

Sea weather on Monday 20 July 2026

On Monday 20 July 2026, the sun will rise at 06:03 and will set at 18:52 on the beach(es) of Guam (Marianas). The outside temperature will be a high of 85°F t and a low of 83°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 9.3mph km/h (with gusts up to 14.3mph). Wave height will be up to 3.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature28°C (82°F)28°C (82°F)28°C (82°F)28°C (83°F)28°C (82°F)28°C (83°F)28°C (83°F)28°C (82°F)
Perceived temperature32°C (89°F)31°C (88°F)31°C (88°F)32°C (90°F)31°C (88°F)32°C (89°F)32°C (90°F)32°C (89°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity77%78%79%76%74%73%74%76%
Barometric pressure1010 hPa1008 hPa1009 hPa1010 hPa1009 hPa1008 hPa1008 hPa1010 hPa
Cloud cover61%36%46%39%31%37%57%43%
Heat index32°C (89°F)31°C (88°F)31°C (88°F)32°C (90°F)31°C (88°F)32°C (89°F)32°C (90°F)32°C (89°F)
Dew point24°C (74°F)23°C (74°F)24°C (74°F)24°C (74°F)23°C (73°F)23°C (73°F)23°C (74°F)23°C (74°F)
Wind
Speed11km/h (7mph)9km/h (5mph)12km/h (8mph)15km/h (9mph)15km/h (10mph)14km/h (9mph)13km/h (8mph)12km/h (7mph)
Gusts16km/h (10mph)12km/h (8mph)17km/h (11mph)20km/h (12mph)23km/h (14mph)21km/h (13mph)18km/h (11mph)17km/h (11mph)
Direction 193°
SSW
189°
S
170°
S
164°
SSE
173°
S
179°
S
167°
SSE
147°
SSE
Wind chill28°C (82°F)28°C (82°F)28°C (82°F)28°C (83°F)28°C (82°F)28°C (83°F)28°C (83°F)28°C (82°F)
Waves
Height1.0m (3.2ft)1.0m (3.2ft)0.9m (3.1ft)0.9m (3.1ft)1.0m (3.1ft)1.0m (3.2ft)1.0m (3.2ft)0.9m (3.1ft)
Direction 248°
WSW
249°
WSW
250°
WSW
251°
WSW
252°
WSW
253°
WSW
256°
WSW
259°
WSW
Period6.6 sec.6.6 sec.6.6 sec.6.6 sec.6.7 sec.6.8 sec.6.8 sec.6.7 sec.
Significant height1.0m (3.3ft)0.9m (3ft)0.9m (3ft)0.9m (3ft)0.9m (3ft)0.9m (3ft)0.9m (3ft)0.8m (2.6ft)
Sea water temperature
Water temperature27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)

Sea weather on Tuesday 21 July 2026

On Tuesday 21 July 2026, the sun will rise at 06:04 and will set at 18:52 on the beach(es) of Guam (Marianas). The outside temperature will be a high of 83°F t and a low of 81°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 9.9mph km/h (with gusts up to 13.7mph). Wave height will be up to 3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature28°C (82°F)28°C (82°F)27°C (81°F)28°C (83°F)28°C (83°F)28°C (83°F)28°C (83°F)28°C (82°F)
Perceived temperature31°C (89°F)31°C (88°F)31°C (88°F)32°C (90°F)31°C (89°F)32°C (90°F)32°C (90°F)32°C (89°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity77%79%79%77%73%73%76%79%
Barometric pressure1010 hPa1008 hPa1009 hPa1010 hPa1009 hPa1008 hPa1008 hPa1010 hPa
Cloud cover35%43%46%44%39%48%43%39%
Heat index31°C (89°F)31°C (88°F)31°C (88°F)32°C (90°F)31°C (89°F)32°C (90°F)32°C (90°F)32°C (89°F)
Dew point23°C (74°F)23°C (74°F)24°C (74°F)24°C (75°F)23°C (73°F)23°C (74°F)23°C (74°F)24°C (75°F)
Wind
Speed9km/h (6mph)11km/h (7mph)12km/h (8mph)15km/h (9mph)13km/h (8mph)16km/h (10mph)15km/h (9mph)15km/h (9mph)
Gusts13km/h (8mph)15km/h (10mph)17km/h (11mph)20km/h (12mph)19km/h (12mph)22km/h (14mph)21km/h (13mph)21km/h (13mph)
Direction 140°
SE
124°
SE
115°
ESE
115°
ESE
119°
ESE
117°
ESE
117°
ESE
96°
E
Wind chill28°C (82°F)28°C (82°F)27°C (81°F)28°C (83°F)28°C (83°F)28°C (83°F)28°C (83°F)28°C (82°F)
Waves
Height0.9m (3.0ft)0.9m (2.8ft)0.8m (2.7ft)0.8m (2.5ft)0.7m (2.4ft)0.7m (2.3ft)0.7m (2.4ft)0.7m (2.3ft)
Direction 262°
W
265°
W
258°
WSW
259°
W
261°
W
263°
W
265°
W
265°
W
Period6.6 sec.6.6 sec.6.5 sec.6.4 sec.6.3 sec.6.3 sec.6.2 sec.6.1 sec.
Significant height0.8m (2.6ft)0.8m (2.6ft)0.7m (2.3ft)0.7m (2.3ft)0.6m (2ft)0.7m (2.3ft)0.7m (2.3ft)0.6m (2ft)
Sea water temperature
Water temperature27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)

Sea weather on Wednesday 22 July 2026

On Wednesday 22 July 2026, the sun will rise at 06:04 and will set at 18:52 on the beach(es) of Guam (Marianas). The outside temperature will be a high of 83°F t and a low of 81°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 8.1mph km/h (with gusts up to 11.8mph). Wave height will be up to 3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature27°C (81°F)27°C (81°F)27°C (81°F)28°C (82°F)27°C (81°F)28°C (82°F)28°C (82°F)27°C (81°F)
Perceived temperature31°C (88°F)30°C (87°F)30°C (87°F)31°C (88°F)30°C (87°F)31°C (88°F)32°C (89°F)31°C (88°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity80%79%79%77%75%75%77%81%
Barometric pressure1009 hPa1008 hPa1008 hPa1009 hPa1008 hPa1006 hPa1006 hPa1008 hPa
Cloud cover28%11%17%22%27%45%36%24%
Heat index31°C (88°F)30°C (87°F)30°C (87°F)31°C (88°F)30°C (87°F)31°C (88°F)32°C (89°F)31°C (88°F)
Dew point24°C (74°F)23°C (74°F)23°C (74°F)23°C (74°F)23°C (73°F)23°C (73°F)23°C (74°F)24°C (75°F)
Wind
Speed13km/h (8mph)8km/h (5mph)9km/h (6mph)10km/h (6mph)8km/h (5mph)10km/h (6mph)13km/h (8mph)12km/h (8mph)
Gusts18km/h (11mph)11km/h (7mph)13km/h (8mph)13km/h (8mph)12km/h (7mph)14km/h (9mph)19km/h (12mph)18km/h (11mph)
Direction 91°
E
86°
E
70°
ENE
66°
ENE
41°
NE
19°
NNE

N

N
Wind chill27°C (81°F)27°C (81°F)27°C (81°F)28°C (82°F)27°C (81°F)28°C (82°F)28°C (82°F)27°C (81°F)
Waves
Height0.7m (2.2ft)0.7m (2.2ft)0.7m (2.3ft)0.7m (2.3ft)0.7m (2.3ft)0.7m (2.4ft)0.8m (2.6ft)0.9m (2.8ft)
Direction 262°
W
260°
W
251°
WSW
251°
WSW
253°
WSW
254°
WSW
250°
WSW
246°
WSW
Period6.1 sec.6.1 sec.6.1 sec.6.0 sec.6.0 sec.6.1 sec.6.1 sec.6.1 sec.
Significant height0.6m (2ft)0.6m (2ft)0.6m (2ft)0.6m (2ft)0.6m (2ft)0.7m (2.3ft)0.8m (2.6ft)0.8m (2.6ft)
Sea water temperature
Water temperature27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)

Sea weather on Thursday 23 July 2026

On Thursday 23 July 2026, the sun will rise at 06:04 and will set at 18:52 on the beach(es) of Guam (Marianas). The outside temperature will be a high of 81°F t and a low of 77°F. Precipitation is in the forecast (0.2in throughout the day): choose the right time to go to the beach and dodge the raindrops. The sea will be generally calm, with a wind speed of up to 13.7mph km/h (with gusts up to 24.2mph). Wave height will be up to 13.5ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature27°C (81°F)27°C (81°F)26°C (78°F)26°C (78°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)
Perceived temperature31°C (87°F)30°C (87°F)28°C (83°F)28°C (83°F)30°C (85°F)30°C (86°F)30°C (87°F)31°C (87°F)
Precipitation0in0in0in0in0in0in0.1in0.1in
Humidity82%81%83%82%80%85%86%84%
Barometric pressure1007 hPa1006 hPa1005 hPa1006 hPa1004 hPa1003 hPa1003 hPa1003 hPa
Cloud cover25%53%65%54%67%69%72%92%
Heat index31°C (87°F)30°C (87°F)28°C (83°F)28°C (83°F)30°C (85°F)30°C (86°F)30°C (87°F)31°C (87°F)
Dew point24°C (75°F)23°C (74°F)23°C (73°F)23°C (73°F)23°C (73°F)24°C (75°F)24°C (75°F)24°C (75°F)
Wind
Speed10km/h (6mph)9km/h (6mph)8km/h (5mph)8km/h (5mph)13km/h (8mph)20km/h (13mph)22km/h (14mph)19km/h (12mph)
Gusts15km/h (9mph)14km/h (9mph)11km/h (7mph)12km/h (7mph)19km/h (12mph)32km/h (20mph)39km/h (24mph)26km/h (16mph)
Direction 23°
NNE
45°
NE
127°
SE
240°
WSW
305°
NW
316°
NW
320°
NW
321°
NW
Wind chill27°C (81°F)27°C (81°F)26°C (78°F)26°C (78°F)27°C (80°F)27°C (80°F)27°C (80°F)27°C (80°F)
Waves
Height0.9m (3.0ft)1.2m (3.9ft)1.4m (4.6ft)1.9m (6.2ft)2.6m (8.5ft)3.3m (10.8ft)4.0m (13.1ft)4.1m (13.5ft)
Direction 313°
NW
353°
N
353°
N
347°
NNW
331°
NNW
287°
WNW
253°
WSW
240°
WSW
Period6.1 sec.8.3 sec.10.5 sec.11.6 sec.11.7 sec.11.0 sec.10.2 sec.9.8 sec.
Significant height0.9m (3ft)1.2m (3.9ft)1.1m (3.6ft)1.3m (4.3ft)1.8m (5.9ft)2.5m (8.2ft)2.7m (8.9ft)2.7m (8.9ft)
Sea water temperature
Water temperature29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)

Sea weather on Friday 24 July 2026

On Friday 24 July 2026, the sun will rise at 06:04 and will set at 18:51 on the beach(es) of Guam (Marianas). The outside temperature will be a high of 83°F t and a low of 81°F. Precipitation is in the forecast (0.3in throughout the day): choose the right time to go to the beach and dodge the raindrops. Be careful, the sea will be generally rough with a wind speed of up to 33.6mph km/h (with gusts up to 36mph). Wave height will be up to 13.1ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature27°C (80°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (80°F)27°C (81°F)27°C (81°F)
Perceived temperature30°C (87°F)31°C (88°F)31°C (88°F)32°C (89°F)32°C (89°F)31°C (88°F)32°C (89°F)32°C (90°F)
Precipitation0in0in0in0.1in0.1in0.1in0in0in
Humidity84%84%87%86%87%89%88%88%
Barometric pressure1002 hPa1000 hPa998 hPa999 hPa999 hPa999 hPa1000 hPa1001 hPa
Cloud cover86%89%98%100%100%100%100%100%
Heat index30°C (87°F)31°C (88°F)31°C (88°F)32°C (89°F)32°C (89°F)31°C (88°F)32°C (89°F)32°C (90°F)
Dew point24°C (75°F)24°C (76°F)25°C (76°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)25°C (77°F)
Wind
Speed22km/h (13mph)32km/h (20mph)49km/h (31mph)49km/h (30mph)51km/h (32mph)54km/h (34mph)54km/h (34mph)54km/h (34mph)
Gusts29km/h (18mph)40km/h (25mph)55km/h (34mph)55km/h (34mph)55km/h (34mph)58km/h (36mph)58km/h (36mph)58km/h (36mph)
Direction 316°
NW
297°
WNW
240°
WSW
248°
WSW
255°
WSW
243°
WSW
233°
SW
223°
SW
Wind chill27°C (80°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (81°F)27°C (80°F)27°C (81°F)27°C (81°F)
Waves
Height4.0m (13.1ft)3.7m (12.1ft)2.3m (7.5ft)2.7m (8.9ft)3.3m (10.8ft)3.8m (12.5ft)3.8m (12.5ft)3.6m (11.8ft)
Direction 233°
SW
234°
SW
211°
SSW
214°
SW
219°
SW
212°
SSW
213°
SSW
218°
SW
Period9.6 sec.9.4 sec.8.5 sec.8.6 sec.8.8 sec.8.7 sec.8.9 sec.9.1 sec.
Significant height2.5m (8.2ft)2.2m (7.2ft)1.2m (3.9ft)1.6m (5.2ft)2.0m (6.6ft)2.5m (8.2ft)2.3m (7.5ft)1.9m (6.2ft)
Sea water temperature
Water temperature29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)29°C (85°F)

Sea weather chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

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