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
Sunday 14 December 202574°F to 86°Frecommended
Monday 15 December 202576°F to 85°Frecommended
Tuesday 16 December 202576°F to 85°Frecommended
Wednesday 17 December 202576°F to 86°Frecommended
Thursday 18 December 202577°F to 85°Frecommended
Friday 19 December 202577°F to 85°Frecommended
Saturday 20 December 202577°F to 86°Frecommended

Sea Weather: Your daily and hourly sea weather in Alotau

Sea weather on Sunday 14 December 2025

On Sunday 14 December 2025, the sun will rise at 05:31 and will set at 18:14 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 5mph km/h (with gusts up to 8.7mph). Wave height will be up to 1ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature24°C (75°F)23°C (74°F)24°C (74°F)28°C (83°F)27°C (81°F)27°C (81°F)26°C (78°F)24°C (76°F)
Perceived temperature26°C (79°F)26°C (78°F)26°C (78°F)31°C (88°F)30°C (86°F)31°C (87°F)28°C (83°F)27°C (80°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity89%88%87%64%73%77%82%87%
Barometric pressure1007 hPa1006 hPa1008 hPa1008 hPa1007 hPa1005 hPa1006 hPa1008 hPa
Cloud cover21%13%12%19%52%89%75%89%
Heat index26°C (79°F)26°C (78°F)26°C (78°F)31°C (88°F)30°C (86°F)31°C (87°F)28°C (83°F)27°C (80°F)
Dew point22°C (72°F)21°C (70°F)21°C (70°F)21°C (70°F)22°C (71°F)23°C (73°F)23°C (73°F)22°C (72°F)
Wind
Speed8km/h (5mph)6km/h (4mph)6km/h (4mph)3km/h (2mph)6km/h (4mph)8km/h (5mph)7km/h (4mph)8km/h (5mph)
Gusts14km/h (9mph)12km/h (7mph)10km/h (6mph)3km/h (2mph)10km/h (6mph)13km/h (8mph)13km/h (8mph)14km/h (9mph)
Direction 198°
SSW
206°
SSW
207°
SSW
174°
S
74°
ENE
163°
SSE
167°
SSE
193°
SSW
Wind chill24°C (75°F)23°C (74°F)24°C (74°F)28°C (83°F)27°C (81°F)27°C (81°F)26°C (78°F)24°C (76°F)
Waves
Height0.2m (0.6ft)0.1m (0.5ft)0.1m (0.4ft)0.3m (0.8ft)0.2m (0.5ft)0.1m (0.4ft)0.2m (0.6ft)0.2m (0.8ft)
Direction 125°
SE
202°
SSW
203°
SSW
110°
ESE
28°
NNE
46°
NE
124°
ESE
123°
ESE
Period3.1 sec.2.6 sec.2.3 sec.1.7 sec.1.7 sec.1.9 sec.3.2 sec.3.4 sec.
Significant height0.3m (1ft)0.3m (1ft)0.3m (1ft)0.1m (0.3ft)0.5m (1.6ft)0.1m (0.3ft)0.3m (1ft)0.4m (1.3ft)
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 Monday 15 December 2025

On Monday 15 December 2025, the sun will rise at 05:32 and will set at 18:15 on the beach(es) of Alotau. The outside temperature will be a high of 85°F t and a low of 76°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 4.4mph km/h (with gusts up to 6.8mph). Wave height will be up to 1ft 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)28°C (83°F)29°C (84°F)28°C (82°F)26°C (78°F)25°C (76°F)
Perceived temperature26°C (79°F)26°C (79°F)26°C (79°F)31°C (88°F)31°C (88°F)31°C (87°F)28°C (83°F)27°C (81°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity88%88%86%66%63%74%83%87%
Barometric pressure1007 hPa1006 hPa1008 hPa1008 hPa1007 hPa1006 hPa1007 hPa1009 hPa
Cloud cover85%72%21%34%87%86%81%85%
Heat index26°C (79°F)26°C (79°F)26°C (79°F)31°C (88°F)31°C (88°F)31°C (87°F)28°C (83°F)27°C (81°F)
Dew point22°C (72°F)22°C (71°F)21°C (71°F)21°C (70°F)21°C (70°F)22°C (72°F)23°C (73°F)22°C (72°F)
Wind
Speed6km/h (4mph)6km/h (4mph)4km/h (3mph)3km/h (2mph)7km/h (4mph)4km/h (2mph)4km/h (3mph)5km/h (3mph)
Gusts11km/h (7mph)11km/h (7mph)8km/h (5mph)4km/h (2mph)9km/h (6mph)5km/h (3mph)7km/h (5mph)10km/h (6mph)
Direction 205°
SSW
196°
SSW
202°
SSW
17°
NNE

N
13°
NNE
176°
S
167°
SSE
Wind chill24°C (75°F)24°C (75°F)24°C (75°F)28°C (83°F)29°C (84°F)28°C (82°F)26°C (78°F)25°C (76°F)
Waves
Height0.2m (0.7ft)0.2m (0.6ft)0.1m (0.4ft)0.3m (0.9ft)0.2m (0.5ft)0.1m (0.4ft)0.3m (1.1ft)0.1m (0.4ft)
Direction 124°
ESE
192°
SSW
122°
ESE
117°
ESE
31°
NNE
32°
NNE
100°
E
116°
ESE
Period3.1 sec.2.7 sec.2.5 sec.2.3 sec.2.3 sec.1.9 sec.2.1 sec.2.5 sec.
Significant height0.4m (1.3ft)0.4m (1.3ft)0.3m (1ft)0.1m (0.3ft)0.5m (1.6ft)0.1m (0.3ft)0.2m (0.7ft)0.3m (1ft)
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 Tuesday 16 December 2025

On Tuesday 16 December 2025, the sun will rise at 05:32 and will set at 18:15 on the beach(es) of Alotau. The outside temperature will be a high of 85°F t and a low of 76°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 14.9mph). Wave height will be up to 1ft 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)28°C (82°F)29°C (84°F)27°C (81°F)27°C (80°F)25°C (78°F)
Perceived temperature26°C (80°F)26°C (79°F)26°C (79°F)31°C (87°F)32°C (89°F)29°C (84°F)29°C (85°F)28°C (82°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity89%87%88%70%63%64%79%84%
Barometric pressure1007 hPa1007 hPa1008 hPa1009 hPa1007 hPa1006 hPa1007 hPa1009 hPa
Cloud cover85%89%79%81%78%72%15%23%
Heat index26°C (80°F)26°C (79°F)26°C (79°F)31°C (87°F)32°C (89°F)29°C (84°F)29°C (85°F)28°C (82°F)
Dew point22°C (72°F)22°C (71°F)22°C (71°F)22°C (72°F)21°C (70°F)20°C (67°F)23°C (73°F)22°C (72°F)
Wind
Speed7km/h (4mph)6km/h (4mph)5km/h (3mph)6km/h (4mph)9km/h (5mph)13km/h (8mph)11km/h (7mph)7km/h (4mph)
Gusts13km/h (8mph)12km/h (7mph)9km/h (6mph)8km/h (5mph)12km/h (7mph)24km/h (15mph)18km/h (11mph)12km/h (7mph)
Direction 202°
SSW
187°
S
184°
S
137°
SE
95°
E
109°
ESE
126°
SE
145°
SE
Wind chill24°C (75°F)24°C (75°F)24°C (75°F)28°C (82°F)29°C (84°F)27°C (81°F)27°C (80°F)25°C (78°F)
Waves
Height0.1m (0.5ft)0.1m (0.5ft)0.1m (0.4ft)0.1m (0.4ft)0.1m (0.5ft)0.2m (0.6ft)0.3m (1.0ft)0.3m (1.0ft)
Direction 112°
ESE
110°
ESE
113°
ESE
114°
ESE
60°
ENE
77°
ENE
106°
ESE
100°
E
Period2.6 sec.2.5 sec.2.5 sec.2.5 sec.2.5 sec.2.3 sec.2.3 sec.3.2 sec.
Significant height0.3m (1ft)0.3m (1ft)0.3m (1ft)0.2m (0.7ft)0.4m (1.3ft)0.3m (1ft)0.4m (1.3ft)0.5m (1.6ft)
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 Wednesday 17 December 2025

On Wednesday 17 December 2025, the sun will rise at 05:33 and will set at 18:16 on the beach(es) of Alotau. The outside temperature will be a high of 86°F t and a low of 76°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 5mph km/h (with gusts up to 6.8mph). 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)24°C (76°F)25°C (76°F)29°C (84°F)29°C (85°F)29°C (85°F)26°C (79°F)25°C (77°F)
Perceived temperature27°C (81°F)27°C (80°F)27°C (81°F)32°C (90°F)32°C (90°F)32°C (89°F)29°C (84°F)28°C (82°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity86%88%87%68%60%61%81%87%
Barometric pressure1008 hPa1007 hPa1009 hPa1009 hPa1008 hPa1006 hPa1007 hPa1009 hPa
Cloud cover19%73%26%83%21%70%87%86%
Heat index27°C (81°F)27°C (80°F)27°C (81°F)32°C (90°F)32°C (90°F)32°C (89°F)29°C (84°F)28°C (82°F)
Dew point22°C (72°F)22°C (72°F)22°C (72°F)22°C (72°F)21°C (69°F)21°C (70°F)23°C (73°F)23°C (73°F)
Wind
Speed6km/h (4mph)5km/h (3mph)4km/h (2mph)6km/h (4mph)8km/h (5mph)8km/h (5mph)6km/h (4mph)3km/h (2mph)
Gusts10km/h (6mph)9km/h (6mph)6km/h (4mph)7km/h (4mph)11km/h (7mph)11km/h (7mph)11km/h (7mph)6km/h (3mph)
Direction 153°
SSE
160°
SSE
146°
SE
77°
ENE
47°
NE
40°
NE
84°
E
106°
ESE
Wind chill25°C (77°F)24°C (76°F)25°C (76°F)29°C (84°F)29°C (85°F)29°C (85°F)26°C (79°F)25°C (77°F)
Waves
Height0.2m (0.8ft)0.2m (0.6ft)0.1m (0.5ft)0.4m (1.2ft)0.2m (0.6ft)0.2m (0.6ft)0.2m (0.7ft)0.2m (0.8ft)
Direction 106°
ESE
106°
ESE
107°
ESE
106°
ESE
40°
NE
56°
NE
94°
E
97°
E
Period3.1 sec.3.0 sec.2.9 sec.2.7 sec.2.6 sec.2.6 sec.2.6 sec.2.9 sec.
Significant height0.4m (1.3ft)0.3m (1ft)0.3m (1ft)0.1m (0.3ft)0.5m (1.6ft)0.4m (1.3ft)0.3m (1ft)0.3m (1ft)
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 Thursday 18 December 2025

On Thursday 18 December 2025, the sun will rise at 05:33 and will set at 18:16 on the beach(es) of Alotau. The outside temperature will be a high of 85°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 5mph km/h (with gusts up to 10.6mph). Wave height will be up to 0.7ft 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)28°C (82°F)26°C (79°F)27°C (81°F)27°C (80°F)25°C (77°F)
Perceived temperature27°C (81°F)27°C (81°F)27°C (81°F)31°C (88°F)27°C (81°F)29°C (83°F)29°C (85°F)28°C (82°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity88%89%88%71%63%63%80%88%
Barometric pressure1008 hPa1007 hPa1009 hPa1009 hPa1008 hPa1006 hPa1007 hPa1008 hPa
Cloud cover51%53%87%18%70%82%84%62%
Heat index27°C (81°F)27°C (81°F)27°C (81°F)31°C (88°F)27°C (81°F)29°C (83°F)29°C (85°F)28°C (82°F)
Dew point23°C (73°F)23°C (73°F)23°C (73°F)22°C (72°F)18°C (65°F)19°C (67°F)23°C (73°F)23°C (74°F)
Wind
Speed3km/h (2mph)2km/h (1mph)1km/h (1mph)6km/h (4mph)8km/h (5mph)8km/h (5mph)7km/h (4mph)7km/h (4mph)
Gusts4km/h (3mph)3km/h (2mph)2km/h (1mph)7km/h (4mph)17km/h (11mph)15km/h (9mph)12km/h (7mph)12km/h (8mph)
Direction 64°
ENE
53°
NE
90°
E
42°
NE
19°
NNE
33°
NNE
89°
E
107°
ESE
Wind chill25°C (77°F)25°C (76°F)25°C (76°F)28°C (82°F)26°C (79°F)27°C (81°F)27°C (80°F)25°C (77°F)
Waves
Height0.2m (0.7ft)0.2m (0.6ft)0.1m (0.5ft)0.1m (0.3ft)0.2m (0.5ft)0.1m (0.5ft)0.1m (0.5ft)0.2m (0.6ft)
Direction 101°
E
103°
ESE
105°
ESE
106°
ESE
37°
NE
26°
NNE
72°
ENE
90°
E
Period2.9 sec.2.9 sec.2.8 sec.2.7 sec.2.6 sec.2.6 sec.2.6 sec.2.6 sec.
Significant height0.3m (1ft)0.3m (1ft)0.2m (0.7ft)0.2m (0.7ft)0.4m (1.3ft)0.3m (1ft)0.4m (1.3ft)0.3m (1ft)
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 19 December 2025

On Friday 19 December 2025, the sun will rise at 05:34 and will set at 18:17 on the beach(es) of Alotau. The outside temperature will be a high of 85°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 6.2mph km/h (with gusts up to 8.7mph). Wave height will be up to 0.7ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature25°C (77°F)25°C (77°F)26°C (79°F)28°C (83°F)29°C (85°F)28°C (82°F)26°C (80°F)26°C (78°F)
Perceived temperature28°C (82°F)28°C (82°F)29°C (84°F)32°C (89°F)32°C (90°F)30°C (86°F)29°C (84°F)28°C (83°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity87%87%82%71%62%62%75%83%
Barometric pressure1007 hPa1006 hPa1007 hPa1007 hPa1006 hPa1005 hPa1006 hPa1008 hPa
Cloud cover58%36%28%25%19%12%14%34%
Heat index28°C (82°F)28°C (82°F)29°C (84°F)32°C (89°F)32°C (90°F)30°C (86°F)29°C (84°F)28°C (83°F)
Dew point23°C (73°F)23°C (73°F)23°C (73°F)22°C (72°F)21°C (70°F)20°C (68°F)22°C (71°F)22°C (72°F)
Wind
Speed5km/h (3mph)5km/h (3mph)6km/h (4mph)8km/h (5mph)10km/h (6mph)9km/h (5mph)4km/h (3mph)1km/h (1mph)
Gusts9km/h (6mph)9km/h (5mph)8km/h (5mph)10km/h (6mph)12km/h (7mph)14km/h (9mph)8km/h (5mph)3km/h (2mph)
Direction 70°
ENE
26°
NNE
18°
NNE
244°
WSW
350°
N
129°
SE
20°
NNE
124°
ESE
Wind chill25°C (77°F)25°C (77°F)26°C (79°F)28°C (83°F)29°C (85°F)28°C (82°F)26°C (80°F)26°C (78°F)
Waves
Height0.2m (0.7ft)0.2m (0.7ft)0.2m (0.7ft)0.2m (0.7ft)0.2m (0.7ft)0.2m (0.7ft)0.1m (0.3ft)0.1m (0.3ft)
Direction 96°
E
86°
E
76°
ENE
71°
ENE
28°
NNE

N

N
12°
NNE
Period2.7 sec.2.8 sec.2.8 sec.2.9 sec.2.9 sec.2.9 sec.2.9 sec.2.2 sec.
Significant height0.2m (0.7ft)0.2m (0.7ft)0.2m (0.7ft)0.3m (1ft)0.3m (1ft)0.3m (1ft)0.2m (0.7ft)0.1m (0.3ft)
Sea water temperature
Water temperature30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)

Sea weather on Saturday 20 December 2025

On Saturday 20 December 2025, the sun will rise at 05:34 and will set at 18:17 on the beach(es) of Alotau. The outside temperature will be a high of 86°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 5mph km/h (with gusts up to 6.8mph). 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 (77°F)26°C (78°F)28°C (83°F)29°C (85°F)29°C (83°F)27°C (80°F)26°C (78°F)
Perceived temperature28°C (82°F)27°C (81°F)29°C (83°F)32°C (89°F)33°C (91°F)32°C (89°F)30°C (86°F)29°C (83°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity85%86%83%71%63%67%79%85%
Barometric pressure1007 hPa1006 hPa1007 hPa1007 hPa1005 hPa1004 hPa1006 hPa1007 hPa
Cloud cover33%34%40%23%16%19%28%35%
Heat index28°C (82°F)27°C (81°F)29°C (83°F)32°C (89°F)33°C (91°F)32°C (89°F)30°C (86°F)29°C (83°F)
Dew point23°C (73°F)22°C (72°F)23°C (73°F)23°C (73°F)22°C (71°F)22°C (71°F)23°C (73°F)23°C (73°F)
Wind
Speed1km/h (1mph)2km/h (1mph)3km/h (2mph)6km/h (4mph)8km/h (5mph)8km/h (5mph)5km/h (3mph)3km/h (2mph)
Gusts2km/h (1mph)4km/h (2mph)5km/h (3mph)8km/h (5mph)10km/h (6mph)11km/h (7mph)8km/h (5mph)6km/h (4mph)
Direction 240°
WSW
279°
W
311°
NW
341°
NNW
356°
N
125°
SE
41°
NE
86°
E
Wind chill25°C (77°F)25°C (77°F)26°C (78°F)28°C (83°F)29°C (85°F)29°C (83°F)27°C (80°F)26°C (78°F)
Waves
Height0.3m (1.0ft)0.3m (1.0ft)0.2m (0.7ft)0.1m (0.3ft)0.2m (0.7ft)0.1m (0.3ft)0.4m (1.3ft)0.4m (1.3ft)
Direction 75°
ENE
107°
ESE
107°
ESE
262°
W
352°
N
121°
ESE
73°
ENE
108°
ESE
Period1.9 sec.1.9 sec.1.9 sec.1.9 sec.1.9 sec.2.0 sec.6.1 sec.8.2 sec.
Significant height0.1m (0.3ft)0.2m (0.7ft)0.2m (0.7ft)0.3m (1ft)0.4m (1.3ft)0.2m (0.7ft)0.1m (0.3ft)0.1m (0.3ft)
Sea water temperature
Water temperature30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)30°C (85°F)

Sea weather chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

Change units