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
Monday 20 July 202668°F to 76°Frecommended
Tuesday 21 July 202661°F to 77°Frecommended
Wednesday 22 July 202665°F to 76°Frecommended
Thursday 23 July 202663°F to 77°Frecommended
Friday 24 July 202668°F to 81°Frecommended
Saturday 25 July 202670°F to 77°Frecommended
Sunday 26 July 202670°F to 77°Frecommended

Sea Weather: Your daily and hourly sea weather in Alotau

Sea weather on Monday 20 July 2026

On Monday 20 July 2026, the sun will rise at 06:17 and will set at 17:53 on the beach(es) of Alotau. The outside temperature will be a high of 76°F t and a low of 68°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 15.5mph). Wave height will be up to 1.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature21°C (70°F)21°C (70°F)20°C (68°F)24°C (74°F)24°C (76°F)23°C (74°F)21°C (69°F)21°C (69°F)
Perceived temperature21°C (70°F)21°C (70°F)20°C (68°F)25°C (78°F)26°C (79°F)25°C (77°F)21°C (69°F)21°C (69°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity77%80%86%69%67%69%82%85%
Barometric pressure1016 hPa1015 hPa1015 hPa1016 hPa1014 hPa1013 hPa1014 hPa1016 hPa
Cloud cover85%49%43%30%70%73%41%45%
Heat index24°C (76°F)21°C (70°F)20°C (68°F)25°C (78°F)26°C (79°F)25°C (77°F)21°C (69°F)21°C (69°F)
Dew point17°C (63°F)17°C (63°F)18°C (64°F)17°C (63°F)18°C (64°F)17°C (63°F)18°C (64°F)18°C (64°F)
Wind
Speed13km/h (8mph)11km/h (7mph)11km/h (7mph)12km/h (8mph)14km/h (9mph)16km/h (10mph)14km/h (9mph)14km/h (9mph)
Gusts20km/h (12mph)18km/h (11mph)19km/h (12mph)15km/h (9mph)19km/h (12mph)22km/h (14mph)25km/h (16mph)23km/h (14mph)
Direction 176°
S
177°
S
183°
S
176°
S
156°
SSE
161°
SSE
170°
S
180°
S
Wind chill21°C (70°F)21°C (70°F)20°C (68°F)24°C (74°F)24°C (76°F)23°C (74°F)21°C (69°F)21°C (69°F)
Waves
Height0.3m (1.1ft)0.4m (1.2ft)0.3m (1.1ft)0.3m (1.0ft)0.4m (1.4ft)0.5m (1.6ft)0.5m (1.5ft)0.4m (1.4ft)
Direction 106°
ESE
126°
SE
124°
SE
128°
SE
133°
SE
128°
SE
132°
SE
133°
SE
Period4.2 sec.7.9 sec.3.7 sec.7.6 sec.7.4 sec.7.3 sec.8.9 sec.7.0 sec.
Significant height0.5m (1.6ft)0.5m (1.6ft)0.5m (1.6ft)0.4m (1.3ft)0.7m (2.3ft)0.7m (2.3ft)0.7m (2.3ft)0.7m (2.3ft)
Sea water temperature
Water temperature26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)

Sea weather on Tuesday 21 July 2026

On Tuesday 21 July 2026, the sun will rise at 06:16 and will set at 17:53 on the beach(es) of Alotau. The outside temperature will be a high of 77°F t and a low of 61°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 21.8mph). Wave height will be up to 1.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature20°C (69°F)21°C (69°F)20°C (68°F)23°C (73°F)25°C (77°F)23°C (73°F)17°C (63°F)19°C (66°F)
Perceived temperature20°C (69°F)21°C (69°F)20°C (68°F)25°C (77°F)26°C (79°F)25°C (77°F)17°C (63°F)19°C (66°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity85%82%83%68%58%55%70%78%
Barometric pressure1015 hPa1014 hPa1015 hPa1016 hPa1014 hPa1012 hPa1013 hPa1015 hPa
Cloud cover52%59%58%34%48%3%0%0%
Heat index20°C (69°F)21°C (69°F)20°C (68°F)25°C (77°F)26°C (79°F)25°C (77°F)17°C (63°F)19°C (66°F)
Dew point18°C (64°F)17°C (63°F)17°C (63°F)17°C (62°F)16°C (61°F)13°C (56°F)12°C (53°F)15°C (59°F)
Wind
Speed12km/h (8mph)12km/h (7mph)11km/h (7mph)12km/h (8mph)13km/h (8mph)18km/h (11mph)16km/h (10mph)14km/h (9mph)
Gusts20km/h (12mph)18km/h (11mph)18km/h (11mph)15km/h (9mph)17km/h (10mph)35km/h (21mph)34km/h (21mph)28km/h (17mph)
Direction 182°
S
183°
S
183°
S
185°
S
184°
S
185°
S
182°
S
185°
S
Wind chill20°C (69°F)21°C (69°F)20°C (68°F)23°C (73°F)25°C (77°F)23°C (73°F)17°C (63°F)19°C (66°F)
Waves
Height0.4m (1.3ft)0.3m (1.1ft)0.3m (1.1ft)0.3m (1.0ft)0.3m (1.1ft)0.5m (1.8ft)0.5m (1.7ft)0.4m (1.5ft)
Direction 134°
SE
135°
SE
160°
SSE
159°
SSE
155°
SSE
143°
SE
144°
SE
160°
SSE
Period9.1 sec.6.9 sec.10.2 sec.10.0 sec.6.4 sec.9.8 sec.9.7 sec.9.6 sec.
Significant height0.5m (1.6ft)0.5m (1.6ft)0.6m (2ft)0.5m (1.6ft)0.6m (2ft)0.9m (3ft)0.8m (2.6ft)0.7m (2.3ft)
Sea water temperature
Water temperature26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)

Sea weather on Wednesday 22 July 2026

On Wednesday 22 July 2026, the sun will rise at 06:16 and will set at 17:53 on the beach(es) of Alotau. The outside temperature will be a high of 76°F t and a low of 65°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 11.8mph km/h (with gusts up to 21.8mph). Wave height will be up to 2ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature18°C (65°F)18°C (65°F)19°C (65°F)23°C (73°F)22°C (72°F)23°C (74°F)21°C (69°F)20°C (68°F)
Perceived temperature18°C (65°F)18°C (65°F)19°C (65°F)25°C (77°F)25°C (76°F)25°C (77°F)21°C (69°F)20°C (68°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity81%82%85%68%54%61%80%88%
Barometric pressure1015 hPa1013 hPa1014 hPa1015 hPa1013 hPa1011 hPa1013 hPa1015 hPa
Cloud cover0%0%2%3%5%5%13%8%
Heat index18°C (65°F)18°C (65°F)19°C (65°F)25°C (77°F)25°C (76°F)25°C (77°F)21°C (69°F)20°C (68°F)
Dew point15°C (59°F)15°C (59°F)16°C (61°F)16°C (61°F)12°C (54°F)15°C (59°F)17°C (63°F)18°C (64°F)
Wind
Speed12km/h (7mph)12km/h (8mph)11km/h (7mph)11km/h (7mph)10km/h (6mph)19km/h (12mph)14km/h (9mph)13km/h (8mph)
Gusts23km/h (15mph)24km/h (15mph)21km/h (13mph)14km/h (8mph)20km/h (13mph)35km/h (22mph)27km/h (17mph)23km/h (15mph)
Direction 189°
S
191°
SSW
194°
SSW
188°
S
164°
SSE
163°
SSE
176°
S
181°
S
Wind chill18°C (65°F)18°C (65°F)19°C (65°F)23°C (73°F)22°C (72°F)23°C (74°F)21°C (69°F)20°C (68°F)
Waves
Height0.4m (1.2ft)0.3m (0.9ft)0.3m (0.9ft)0.3m (0.9ft)0.4m (1.2ft)0.6m (2.0ft)0.5m (1.7ft)0.3m (1.1ft)
Direction 168°
SSE
182°
S
188°
S
185°
S
168°
SSE
143°
SE
140°
SE
159°
SSE
Period9.6 sec.9.6 sec.9.6 sec.9.7 sec.9.7 sec.9.8 sec.9.7 sec.9.7 sec.
Significant height0.5m (1.6ft)0.5m (1.6ft)0.5m (1.6ft)0.5m (1.6ft)0.7m (2.3ft)0.9m (3ft)0.7m (2.3ft)0.5m (1.6ft)
Sea water temperature
Water temperature26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)

Sea weather on Thursday 23 July 2026

On Thursday 23 July 2026, the sun will rise at 06:16 and will set at 17:53 on the beach(es) of Alotau. The outside temperature will be a high of 77°F t and a low of 63°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 8.7mph km/h (with gusts up to 18mph). Wave height will be up to 1ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature20°C (68°F)21°C (69°F)20°C (68°F)24°C (74°F)23°C (73°F)24°C (76°F)18°C (65°F)20°C (68°F)
Perceived temperature20°C (68°F)21°C (69°F)20°C (68°F)25°C (77°F)25°C (76°F)25°C (78°F)18°C (65°F)20°C (68°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity88%82%84%67%53%54%76%86%
Barometric pressure1014 hPa1013 hPa1014 hPa1015 hPa1012 hPa1010 hPa1012 hPa1013 hPa
Cloud cover30%30%6%9%0%0%0%3%
Heat index20°C (68°F)21°C (69°F)20°C (68°F)25°C (77°F)25°C (76°F)25°C (78°F)18°C (65°F)20°C (68°F)
Dew point18°C (64°F)17°C (63°F)17°C (63°F)17°C (63°F)13°C (55°F)14°C (58°F)14°C (57°F)18°C (64°F)
Wind
Speed11km/h (7mph)9km/h (6mph)8km/h (5mph)9km/h (6mph)6km/h (4mph)11km/h (7mph)14km/h (9mph)12km/h (8mph)
Gusts19km/h (12mph)15km/h (9mph)14km/h (9mph)11km/h (7mph)13km/h (8mph)20km/h (12mph)29km/h (18mph)22km/h (13mph)
Direction 193°
SSW
192°
SSW
198°
SSW
197°
SSW
189°
S
198°
SSW
202°
SSW
206°
SSW
Wind chill20°C (68°F)21°C (69°F)20°C (68°F)24°C (74°F)23°C (73°F)24°C (76°F)18°C (65°F)20°C (68°F)
Waves
Height0.3m (0.9ft)0.2m (0.8ft)0.2m (0.8ft)0.2m (0.7ft)0.2m (0.5ft)0.3m (1.1ft)0.3m (1.0ft)0.3m (1.0ft)
Direction 162°
SSE
169°
S
183°
S
188°
S
105°
ESE
179°
S
185°
S
196°
SSW
Period9.8 sec.9.8 sec.9.8 sec.9.8 sec.9.8 sec.9.8 sec.9.8 sec.9.7 sec.
Significant height0.5m (1.6ft)0.4m (1.3ft)0.5m (1.6ft)0.3m (1ft)0.3m (1ft)0.6m (2ft)0.5m (1.6ft)0.5m (1.6ft)
Sea water temperature
Water temperature26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)

Sea weather on Friday 24 July 2026

On Friday 24 July 2026, the sun will rise at 06:16 and will set at 17:53 on the beach(es) of Alotau. The outside temperature will be a high of 81°F t and a low of 68°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 14.3mph). Wave height will be up to 1.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature20°C (68°F)20°C (68°F)20°C (68°F)24°C (76°F)27°C (80°F)26°C (79°F)23°C (73°F)22°C (71°F)
Perceived temperature20°C (68°F)20°C (68°F)20°C (68°F)26°C (79°F)28°C (82°F)28°C (82°F)25°C (77°F)22°C (71°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity87%85%82%66%61%67%84%91%
Barometric pressure1013 hPa1012 hPa1013 hPa1014 hPa1012 hPa1010 hPa1012 hPa1014 hPa
Cloud cover11%20%18%17%59%50%35%57%
Heat index20°C (68°F)20°C (68°F)20°C (68°F)26°C (79°F)28°C (82°F)28°C (82°F)25°C (77°F)24°C (76°F)
Dew point18°C (64°F)18°C (64°F)17°C (62°F)18°C (64°F)19°C (65°F)20°C (67°F)20°C (67°F)20°C (68°F)
Wind
Speed10km/h (6mph)8km/h (5mph)7km/h (4mph)5km/h (3mph)8km/h (5mph)12km/h (7mph)13km/h (8mph)12km/h (7mph)
Gusts17km/h (11mph)14km/h (9mph)14km/h (8mph)7km/h (4mph)9km/h (6mph)16km/h (10mph)23km/h (14mph)21km/h (13mph)
Direction 215°
SW
224°
SW
226°
SW
203°
SSW
112°
ESE
151°
SSE
159°
SSE
171°
S
Wind chill20°C (68°F)20°C (68°F)20°C (68°F)24°C (76°F)27°C (80°F)26°C (79°F)23°C (73°F)22°C (71°F)
Waves
Height0.2m (0.8ft)0.2m (0.5ft)0.1m (0.4ft)0.1m (0.4ft)0.1m (0.5ft)0.3m (1.0ft)0.4m (1.4ft)0.4m (1.2ft)
Direction 209°
SSW
108°
ESE
107°
ESE
105°
ESE
104°
ESE
118°
ESE
135°
SE
137°
SE
Period9.6 sec.9.5 sec.9.5 sec.9.3 sec.9.2 sec.9.1 sec.9.1 sec.9.0 sec.
Significant height0.4m (1.3ft)0.3m (1ft)0.3m (1ft)0.2m (0.7ft)0.3m (1ft)0.5m (1.6ft)0.6m (2ft)0.5m (1.6ft)
Sea water temperature
Water temperature26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)

Sea weather on Saturday 25 July 2026

On Saturday 25 July 2026, the sun will rise at 06:16 and will set at 17:54 on the beach(es) of Alotau. The outside temperature will be a high of 77°F t and a low of 70°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 11.2mph km/h (with gusts up to 16.2mph). Wave height will be up to 2.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature22°C (72°F)22°C (72°F)22°C (72°F)23°C (74°F)24°C (76°F)24°C (76°F)22°C (72°F)22°C (71°F)
Perceived temperature25°C (76°F)25°C (76°F)25°C (76°F)25°C (78°F)26°C (79°F)26°C (79°F)25°C (77°F)22°C (71°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity90%91%90%87%78%74%83%87%
Barometric pressure1013 hPa1013 hPa1014 hPa1014 hPa1013 hPa1012 hPa1013 hPa1015 hPa
Cloud cover98%97%87%77%58%36%33%64%
Heat index25°C (76°F)25°C (76°F)25°C (76°F)25°C (78°F)26°C (79°F)26°C (79°F)25°C (77°F)25°C (76°F)
Dew point21°C (69°F)21°C (69°F)21°C (69°F)21°C (70°F)20°C (69°F)19°C (67°F)19°C (67°F)20°C (67°F)
Wind
Speed13km/h (8mph)13km/h (8mph)14km/h (9mph)16km/h (10mph)17km/h (11mph)18km/h (11mph)15km/h (10mph)12km/h (7mph)
Gusts20km/h (12mph)20km/h (12mph)22km/h (13mph)26km/h (16mph)24km/h (15mph)25km/h (16mph)26km/h (16mph)21km/h (13mph)
Direction 158°
SSE
154°
SSE
150°
SSE
143°
SE
136°
SE
133°
SE
142°
SE
154°
SSE
Wind chill22°C (72°F)22°C (72°F)22°C (72°F)23°C (74°F)24°C (76°F)24°C (76°F)22°C (72°F)22°C (71°F)
Waves
Height0.4m (1.3ft)0.6m (2.0ft)0.7m (2.3ft)0.8m (2.6ft)0.8m (2.6ft)0.8m (2.6ft)0.7m (2.3ft)0.6m (2.0ft)
Direction 127°
SE
115°
ESE
110°
ESE
108°
ESE
106°
ESE
105°
ESE
105°
ESE
106°
ESE
Period9.0 sec.9.0 sec.9.0 sec.9.0 sec.9.0 sec.7.5 sec.6.9 sec.8.0 sec.
Significant height0.5m (1.6ft)0.6m (2ft)0.7m (2.3ft)0.8m (2.6ft)0.8m (2.6ft)0.8m (2.6ft)0.7m (2.3ft)0.7m (2.3ft)
Sea water temperature
Water temperature26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)

Sea weather on Sunday 26 July 2026

On Sunday 26 July 2026, the sun will rise at 06:16 and will set at 17:54 on the beach(es) of Alotau. The outside temperature will be a high of 77°F t and a low of 70°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 10.6mph km/h (with gusts up to 16.2mph). Wave height will be up to 2ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature22°C (72°F)22°C (71°F)22°C (71°F)24°C (75°F)25°C (77°F)25°C (76°F)22°C (72°F)21°C (70°F)
Perceived temperature25°C (76°F)22°C (71°F)22°C (71°F)26°C (79°F)27°C (80°F)26°C (79°F)23°C (73°F)21°C (70°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity87%89%90%79%72%72%82%89%
Barometric pressure1014 hPa1013 hPa1014 hPa1015 hPa1014 hPa1013 hPa1014 hPa1016 hPa
Cloud cover57%43%32%41%46%36%23%24%
Heat index25°C (76°F)24°C (76°F)24°C (76°F)26°C (79°F)27°C (80°F)26°C (79°F)23°C (73°F)23°C (74°F)
Dew point20°C (68°F)20°C (67°F)20°C (68°F)20°C (68°F)20°C (67°F)19°C (67°F)19°C (66°F)19°C (67°F)
Wind
Speed10km/h (6mph)10km/h (6mph)10km/h (6mph)13km/h (8mph)16km/h (10mph)17km/h (10mph)14km/h (9mph)13km/h (8mph)
Gusts18km/h (11mph)18km/h (11mph)17km/h (11mph)17km/h (11mph)20km/h (13mph)23km/h (14mph)26km/h (16mph)24km/h (15mph)
Direction 165°
SSE
172°
S
174°
S
154°
SSE
142°
SE
142°
SE
156°
SSE
165°
SSE
Wind chill22°C (72°F)22°C (71°F)22°C (71°F)24°C (75°F)25°C (77°F)25°C (76°F)22°C (72°F)21°C (70°F)
Waves
Height0.6m (2.0ft)0.6m (2.0ft)0.5m (1.6ft)0.5m (1.6ft)0.5m (1.6ft)0.6m (2.0ft)0.6m (2.0ft)0.6m (2.0ft)
Direction 108°
ESE
108°
ESE
107°
ESE
107°
ESE
106°
ESE
107°
ESE
109°
ESE
113°
ESE
Period8.5 sec.5.6 sec.4.1 sec.7.1 sec.8.7 sec.8.6 sec.8.5 sec.8.4 sec.
Significant height0.7m (2.3ft)0.7m (2.3ft)0.7m (2.3ft)0.6m (2ft)0.6m (2ft)0.7m (2.3ft)0.6m (2ft)0.6m (2ft)
Sea water temperature
Water temperature26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)26°C (79°F)

Sea weather chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

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