Sea weather in Alotau in Papua New Guinea All the beach weather in Alotau

All the essential weather information for enjoying the beach in Alotau in Papua New Guinea, 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 Alotau over the next 7 days?

Discover the best moment to go to the beach in Alotau in Papua New Guinea this week to enjoy the best weather and calmest sea possible. Our opinion is based on reliable sea weather forecasts in Alotau. You can see full forecasts by clicking on the day you want to see in the table below.

Date Outside temp. Our opinion
Friday 5 December 202576°F to 85°Frecommended
Saturday 6 December 202577°F to 81°Frecommended
Sunday 7 December 202577°F to 86°Frecommended
Monday 8 December 202574°F to 86°Frecommended
Tuesday 9 December 202574°F to 81°Frecommended
Wednesday 10 December 202574°F to 77°Frecommended
Thursday 11 December 202574°F to 86°Frecommended

Sea Weather: Your daily and hourly sea weather in Alotau

Sea weather on Friday 5 December 2025

On Friday 5 December 2025, the sun will rise at 05:28 and will set at 18:10 on the beach(es) of Alotau. The outside temperature will be a high of 85°F t and a low of 76°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 9.9mph km/h (with gusts up to 16.2mph). Wave height will be up to 1.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature25°C (77°F)24°C (76°F)25°C (77°F)29°C (84°F)28°C (82°F)27°C (80°F)25°C (77°F)25°C (77°F)
Perceived temperature28°C (82°F)27°C (80°F)27°C (81°F)32°C (89°F)31°C (88°F)30°C (85°F)28°C (82°F)28°C (82°F)
Precipitation0in0in0in0in0in0in0.1in0in
Humidity89%87%86%68%70%82%89%92%
Barometric pressure1010 hPa1009 hPa1010 hPa1011 hPa1009 hPa1008 hPa1009 hPa1010 hPa
Cloud cover88%73%46%53%83%89%76%78%
Heat index28°C (82°F)27°C (80°F)27°C (81°F)32°C (89°F)31°C (88°F)30°C (85°F)28°C (82°F)28°C (82°F)
Dew point23°C (73°F)22°C (72°F)22°C (72°F)22°C (72°F)22°C (72°F)23°C (74°F)23°C (74°F)23°C (74°F)
Wind
Speed9km/h (6mph)1km/h (1mph)3km/h (2mph)3km/h (2mph)5km/h (3mph)13km/h (8mph)16km/h (10mph)13km/h (8mph)
Gusts16km/h (10mph)2km/h (2mph)5km/h (3mph)4km/h (3mph)7km/h (4mph)20km/h (13mph)25km/h (15mph)26km/h (16mph)
Direction 140°
SE
242°
WSW
262°
W
41°
NE
63°
ENE
111°
ESE
111°
ESE
117°
ESE
Wind chill25°C (77°F)24°C (76°F)25°C (77°F)29°C (84°F)28°C (82°F)27°C (80°F)25°C (77°F)25°C (77°F)
Waves
Height0.1m (0.4ft)0.1m (0.4ft)0.1m (0.3ft)0.2m (0.7ft)0.1m (0.4ft)0.4m (1.3ft)0.5m (1.6ft)0.4m (1.3ft)
Direction 94°
E
93°
E
92°
E
91°
E
65°
ENE
63°
ENE
64°
ENE
66°
ENE
Period4.0 sec.4.1 sec.4.1 sec.4.1 sec.4.1 sec.3.6 sec.3.9 sec.3.9 sec.
Significant height0.2m (0.7ft)0.2m (0.7ft)0.2m (0.7ft)0.3m (1ft)0.3m (1ft)0.2m (0.7ft)0.2m (0.7ft)0.1m (0.3ft)
Sea water temperature
Water temperature30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)

Sea weather on Saturday 6 December 2025

On Saturday 6 December 2025, the sun will rise at 05:28 and will set at 18:10 on the beach(es) of Alotau. The outside temperature will be a high of 81°F t and a low of 77°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 5.6mph km/h (with gusts up to 8.7mph). Wave height will be up to 1.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature25°C (77°F)25°C (76°F)25°C (76°F)25°C (78°F)25°C (78°F)27°C (81°F)26°C (78°F)25°C (78°F)
Perceived temperature28°C (82°F)27°C (81°F)27°C (81°F)28°C (83°F)28°C (82°F)30°C (86°F)28°C (83°F)28°C (82°F)
Precipitation0in0in0.1in0in0in0in0in0in
Humidity92%91%91%88%86%75%85%87%
Barometric pressure1009 hPa1007 hPa1009 hPa1010 hPa1008 hPa1006 hPa1007 hPa1009 hPa
Cloud cover85%65%83%70%51%81%69%41%
Heat index28°C (82°F)27°C (81°F)27°C (81°F)28°C (83°F)28°C (82°F)30°C (86°F)28°C (83°F)28°C (82°F)
Dew point23°C (74°F)23°C (73°F)23°C (73°F)23°C (74°F)23°C (73°F)22°C (72°F)23°C (73°F)23°C (73°F)
Wind
Speed8km/h (5mph)5km/h (3mph)3km/h (2mph)8km/h (5mph)9km/h (6mph)8km/h (5mph)6km/h (4mph)8km/h (5mph)
Gusts12km/h (7mph)9km/h (5mph)4km/h (3mph)14km/h (9mph)14km/h (9mph)10km/h (6mph)10km/h (6mph)12km/h (8mph)
Direction 117°
ESE
115°
ESE
90°
E
346°
NNW
337°
NNW
334°
NNW
333°
NNW
315°
NW
Wind chill25°C (77°F)25°C (76°F)25°C (76°F)25°C (78°F)25°C (78°F)27°C (81°F)26°C (78°F)25°C (78°F)
Waves
Height0.3m (0.9ft)0.2m (0.7ft)0.2m (0.5ft)0.1m (0.4ft)0.1m (0.5ft)0.4m (1.2ft)0.3m (1.1ft)0.2m (0.7ft)
Direction 65°
ENE
92°
E
92°
E
92°
E
355°
N
329°
NNW
322°
NW
326°
NNW
Period3.5 sec.2.9 sec.5.2 sec.5.1 sec.5.1 sec.5.4 sec.5.4 sec.2.9 sec.
Significant height0.1m (0.3ft)0.3m (1ft)0.2m (0.7ft)0.1m (0.3ft)0.4m (1.3ft)0.7m (2.3ft)0.3m (1ft)0.1m (0.3ft)
Sea water temperature
Water temperature30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)

Sea weather on Sunday 7 December 2025

On Sunday 7 December 2025, the sun will rise at 05:29 and will set at 18:11 on the beach(es) of Alotau. The outside temperature will be a high of 86°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 5.6mph km/h (with gusts up to 8.7mph). Wave height will be up to 1.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature25°C (77°F)25°C (77°F)25°C (77°F)29°C (84°F)29°C (84°F)27°C (81°F)26°C (78°F)25°C (76°F)
Perceived temperature28°C (82°F)27°C (81°F)27°C (81°F)32°C (89°F)32°C (89°F)31°C (87°F)28°C (82°F)27°C (81°F)
Precipitation0in0in0in0in0in0.1in0in0in
Humidity85%81%82%65%64%78%84%88%
Barometric pressure1008 hPa1006 hPa1008 hPa1008 hPa1006 hPa1005 hPa1006 hPa1008 hPa
Cloud cover53%77%46%26%86%87%59%72%
Heat index28°C (82°F)27°C (81°F)27°C (81°F)32°C (89°F)32°C (89°F)31°C (87°F)28°C (82°F)27°C (81°F)
Dew point22°C (72°F)21°C (71°F)22°C (71°F)22°C (71°F)21°C (71°F)23°C (74°F)23°C (73°F)23°C (73°F)
Wind
Speed9km/h (5mph)7km/h (4mph)7km/h (4mph)6km/h (4mph)9km/h (6mph)4km/h (2mph)4km/h (3mph)7km/h (4mph)
Gusts14km/h (9mph)12km/h (7mph)12km/h (8mph)7km/h (5mph)12km/h (7mph)6km/h (3mph)8km/h (5mph)12km/h (8mph)
Direction 301°
WNW
296°
WNW
309°
NW
342°
NNW
349°
N

N
218°
SW
206°
SSW
Wind chill25°C (77°F)25°C (77°F)25°C (77°F)29°C (84°F)29°C (84°F)27°C (81°F)26°C (78°F)25°C (76°F)
Waves
Height0.1m (0.4ft)0.5m (1.7ft)0.3m (0.9ft)0.5m (1.7ft)0.1m (0.5ft)0.1m (0.4ft)0.1m (0.4ft)0.2m (0.7ft)
Direction 329°
NNW
93°
E
93°
E
92°
E
353°
N
357°
N
359°
N
204°
SSW
Period2.6 sec.2.3 sec.4.9 sec.4.9 sec.4.9 sec.4.9 sec.1.9 sec.1.9 sec.
Significant height0.1m (0.3ft)0.1m (0.3ft)0.2m (0.7ft)0.2m (0.7ft)0.4m (1.3ft)0.2m (0.7ft)0.1m (0.3ft)0.3m (1ft)
Sea water temperature
Water temperature30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)

Sea weather on Monday 8 December 2025

On Monday 8 December 2025, the sun will rise at 05:29 and will set at 18:11 on the beach(es) of Alotau. The outside temperature will be a high of 86°F t and a low of 74°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 5.6mph km/h (with gusts up to 10.6mph). Wave height will be up to 1.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature24°C (76°F)24°C (75°F)24°C (75°F)29°C (83°F)27°C (81°F)24°C (76°F)23°C (73°F)24°C (74°F)
Perceived temperature27°C (80°F)26°C (80°F)26°C (79°F)31°C (89°F)31°C (87°F)27°C (80°F)25°C (78°F)26°C (78°F)
Precipitation0in0in0in0in0.1in0.1in0in0in
Humidity88%89%88%67%79%90%95%91%
Barometric pressure1007 hPa1005 hPa1006 hPa1007 hPa1005 hPa1004 hPa1006 hPa1007 hPa
Cloud cover83%46%56%52%61%82%69%89%
Heat index27°C (80°F)26°C (80°F)26°C (79°F)31°C (89°F)31°C (87°F)27°C (80°F)25°C (78°F)26°C (78°F)
Dew point22°C (72°F)22°C (72°F)22°C (72°F)22°C (71°F)23°C (74°F)23°C (73°F)22°C (72°F)22°C (71°F)
Wind
Speed6km/h (4mph)7km/h (4mph)7km/h (4mph)4km/h (3mph)6km/h (4mph)9km/h (6mph)3km/h (2mph)5km/h (3mph)
Gusts10km/h (6mph)12km/h (7mph)12km/h (7mph)6km/h (3mph)10km/h (6mph)17km/h (11mph)5km/h (3mph)9km/h (5mph)
Direction 217°
SW
203°
SSW
203°
SSW
196°
SSW
30°
NNE
301°
WNW
225°
SW
193°
SSW
Wind chill24°C (76°F)24°C (75°F)24°C (75°F)29°C (83°F)27°C (81°F)24°C (76°F)23°C (73°F)24°C (74°F)
Waves
Height0.1m (0.4ft)0.1m (0.3ft)0.1m (0.4ft)0.1m (0.3ft)0.1m (0.4ft)0.2m (0.7ft)0.4m (1.2ft)0.2m (0.7ft)
Direction 212°
SSW
208°
SSW
212°
SSW
208°
SSW
20°
NNE
110°
ESE
111°
ESE
111°
ESE
Period1.9 sec.1.9 sec.1.9 sec.1.6 sec.1.6 sec.1.7 sec.1.7 sec.2.1 sec.
Significant height0.3m (1ft)0.3m (1ft)0.3m (1ft)0.1m (0.3ft)0.3m (1ft)0.2m (0.7ft)0.2m (0.7ft)0.2m (0.7ft)
Sea water temperature
Water temperature30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)

Sea weather on Tuesday 9 December 2025

On Tuesday 9 December 2025, the sun will rise at 05:29 and will set at 18:12 on the beach(es) of Alotau. The outside temperature will be a high of 81°F t and a low of 74°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 5.6mph km/h (with gusts up to 9.3mph). Wave height will be up to 1.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature23°C (74°F)23°C (74°F)23°C (74°F)23°C (74°F)23°C (74°F)26°C (79°F)25°C (78°F)24°C (76°F)
Perceived temperature26°C (78°F)25°C (78°F)26°C (78°F)25°C (78°F)26°C (78°F)28°C (82°F)27°C (81°F)26°C (79°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity91%90%89%93%90%71%77%83%
Barometric pressure1007 hPa1004 hPa1006 hPa1007 hPa1006 hPa1003 hPa1006 hPa1007 hPa
Cloud cover92%59%60%70%85%27%89%59%
Heat index26°C (78°F)25°C (78°F)26°C (78°F)25°C (78°F)26°C (78°F)28°C (82°F)27°C (81°F)26°C (79°F)
Dew point22°C (71°F)21°C (71°F)22°C (71°F)22°C (72°F)22°C (71°F)20°C (69°F)21°C (70°F)21°C (70°F)
Wind
Speed7km/h (4mph)3km/h (2mph)6km/h (4mph)9km/h (6mph)1km/h (1mph)4km/h (2mph)5km/h (3mph)9km/h (6mph)
Gusts11km/h (7mph)4km/h (3mph)10km/h (6mph)13km/h (8mph)2km/h (1mph)5km/h (3mph)8km/h (5mph)15km/h (10mph)
Direction 235°
SW
202°
SSW
209°
SSW
214°
SSW
249°
WSW
286°
WNW
182°
S
231°
SW
Wind chill23°C (74°F)23°C (74°F)23°C (74°F)23°C (74°F)23°C (74°F)26°C (79°F)25°C (78°F)24°C (76°F)
Waves
Height0.1m (0.4ft)0.1m (0.4ft)0.1m (0.3ft)0.4m (1.3ft)0.3m (0.8ft)0.3m (1.0ft)0.3m (0.8ft)0.2m (0.6ft)
Direction 192°
SSW
196°
SSW
192°
SSW
107°
ESE
162°
SSE
148°
SSE
129°
SE
123°
ESE
Period2.3 sec.2.3 sec.2.3 sec.2.3 sec.2.6 sec.2.6 sec.3.0 sec.3.0 sec.
Significant height0.3m (1ft)0.3m (1ft)0.3m (1ft)0.3m (1ft)0.4m (1.3ft)0.5m (1.6ft)0.4m (1.3ft)0.3m (1ft)
Sea water temperature
Water temperature30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)

Sea weather on Wednesday 10 December 2025

On Wednesday 10 December 2025, the sun will rise at 05:30 and will set at 18:12 on the beach(es) of Alotau. The outside temperature will be a high of 77°F t and a low of 74°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 8.7mph km/h (with gusts up to 14.3mph). Wave height will be up to 1.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature24°C (75°F)24°C (75°F)24°C (75°F)24°C (76°F)24°C (76°F)25°C (77°F)24°C (75°F)23°C (74°F)
Perceived temperature26°C (79°F)26°C (78°F)26°C (79°F)27°C (80°F)27°C (80°F)27°C (81°F)26°C (79°F)26°C (78°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity84%84%86%89%90%86%86%88%
Barometric pressure1006 hPa1005 hPa1007 hPa1008 hPa1007 hPa1006 hPa1007 hPa1008 hPa
Cloud cover45%41%64%75%71%43%36%26%
Heat index26°C (79°F)26°C (78°F)26°C (79°F)27°C (80°F)27°C (80°F)27°C (81°F)26°C (79°F)26°C (78°F)
Dew point21°C (70°F)21°C (69°F)22°C (71°F)22°C (72°F)22°C (72°F)22°C (72°F)22°C (71°F)21°C (70°F)
Wind
Speed10km/h (6mph)11km/h (7mph)13km/h (8mph)14km/h (9mph)13km/h (8mph)13km/h (8mph)13km/h (8mph)13km/h (8mph)
Gusts17km/h (11mph)20km/h (12mph)20km/h (13mph)21km/h (13mph)20km/h (12mph)20km/h (13mph)23km/h (15mph)23km/h (15mph)
Direction 226°
SW
224°
SW
212°
SSW
212°
SSW
211°
SSW
203°
SSW
201°
SSW
195°
SSW
Wind chill24°C (75°F)24°C (75°F)24°C (75°F)24°C (76°F)24°C (76°F)25°C (77°F)24°C (75°F)23°C (74°F)
Waves
Height0.1m (0.3ft)0.1m (0.3ft)0.3m (1.0ft)0.4m (1.3ft)0.3m (1.0ft)0.2m (0.7ft)0.3m (1.0ft)0.3m (1.0ft)
Direction 111°
ESE
105°
ESE
101°
ESE
174°
S
206°
SSW
193°
SSW
190°
S
194°
SSW
Period2.7 sec.2.5 sec.2.4 sec.2.3 sec.2.3 sec.2.3 sec.2.3 sec.2.3 sec.
Significant height0.3m (1ft)0.3m (1ft)0.2m (0.7ft)0.3m (1ft)0.3m (1ft)0.5m (1.6ft)0.6m (2ft)0.6m (2ft)
Sea water temperature
Water temperature30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)

Sea weather on Thursday 11 December 2025

On Thursday 11 December 2025, the sun will rise at 05:30 and will set at 18:13 on the beach(es) of Alotau. The outside temperature will be a high of 86°F t and a low of 74°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 7.5mph km/h (with gusts up to 13.1mph). Wave height will be up to 1ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature23°C (74°F)23°C (74°F)24°C (75°F)28°C (82°F)30°C (85°F)30°C (85°F)27°C (80°F)24°C (76°F)
Perceived temperature26°C (78°F)25°C (78°F)26°C (79°F)30°C (86°F)32°C (89°F)32°C (89°F)29°C (83°F)26°C (80°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity88%88%85%67%56%56%71%82%
Barometric pressure1006 hPa1005 hPa1006 hPa1007 hPa1005 hPa1004 hPa1006 hPa1007 hPa
Cloud cover17%15%17%31%52%33%20%22%
Heat index26°C (78°F)25°C (78°F)26°C (79°F)30°C (86°F)32°C (89°F)32°C (89°F)29°C (83°F)26°C (80°F)
Dew point21°C (70°F)21°C (70°F)21°C (70°F)21°C (69°F)20°C (68°F)20°C (68°F)21°C (69°F)21°C (70°F)
Wind
Speed12km/h (7mph)11km/h (7mph)10km/h (6mph)7km/h (4mph)7km/h (4mph)10km/h (6mph)12km/h (7mph)10km/h (6mph)
Gusts21km/h (13mph)19km/h (12mph)15km/h (9mph)9km/h (6mph)9km/h (6mph)13km/h (8mph)19km/h (12mph)19km/h (12mph)
Direction 200°
SSW
216°
SW
212°
SSW
218°
SW
227°
SW
217°
SW
213°
SSW
208°
SSW
Wind chill23°C (74°F)23°C (74°F)24°C (75°F)28°C (82°F)30°C (85°F)30°C (85°F)27°C (80°F)24°C (76°F)
Waves
Height0.3m (1.0ft)0.2m (0.7ft)0.2m (0.7ft)0.1m (0.3ft)0.3m (1.0ft)0.2m (0.7ft)0.2m (0.7ft)0.2m (0.7ft)
Direction 195°
SSW
198°
SSW
197°
SSW
189°
S
136°
SE
173°
S
206°
SSW
203°
SSW
Period2.8 sec.3.0 sec.3.0 sec.2.4 sec.2.1 sec.2.1 sec.2.1 sec.2.1 sec.
Significant height0.5m (1.6ft)0.5m (1.6ft)0.4m (1.3ft)0.2m (0.7ft)0.1m (0.3ft)0.3m (1ft)0.4m (1.3ft)0.4m (1.3ft)
Sea water temperature
Water temperature30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)30°C (87°F)

Sea weather chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

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