Sea weather in Otaru in Japan All the beach weather in Otaru

All the essential weather information for enjoying the beach in Otaru in Japan, 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 Otaru over the next 7 days?

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

Date Outside temp. Our opinion
Saturday 13 December 202523°F to 31°Fnot recommended
Sunday 14 December 202529°F to 34°Fnot recommended
Monday 15 December 202531°F to 38°Fnot recommended
Tuesday 16 December 202520°F to 31°Fnot recommended
Wednesday 17 December 202522°F to 23°Fnot recommended
Thursday 18 December 202525°F to 31°Fnot recommended
Friday 19 December 202527°F to 38°Fnot recommended

Sea Weather: Your daily and hourly sea weather in Otaru

Sea weather on Saturday 13 December 2025

On Saturday 13 December 2025, the sun will rise at 06:59 and will set at 16:01 on the beach(es) of Otaru. The outside temperature will be a high of 31°F t and a low of 23°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 23mph km/h (with gusts up to 28mph). Wave height will be up to 6.9ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature-5°C (23°F)-5°C (24°F)-4°C (24°F)-3°C (26°F)-2°C (29°F)-1°C (29°F)-3°C (27°F)-2°C (28°F)
Perceived temperature-14°C (7°F)-13°C (9°F)-12°C (10°F)-11°C (13°F)-9°C (16°F)-9°C (16°F)-8°C (17°F)-7°C (19°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity82%78%69%70%69%66%71%77%
Barometric pressure1023 hPa1024 hPa1024 hPa1024 hPa1023 hPa1023 hPa1022 hPa1021 hPa
Cloud cover100%100%100%100%100%99%93%100%
Heat index-5°C (23°F)-5°C (24°F)-4°C (24°F)-3°C (26°F)-2°C (29°F)-1°C (29°F)-3°C (27°F)-2°C (28°F)
Dew point-8°C (18°F)-8°C (18°F)-9°C (16°F)-8°C (18°F)-7°C (20°F)-7°C (20°F)-7°C (19°F)-6°C (21°F)
Wind
Speed37km/h (23mph)32km/h (20mph)31km/h (19mph)28km/h (18mph)33km/h (21mph)33km/h (21mph)15km/h (10mph)14km/h (9mph)
Gusts45km/h (28mph)40km/h (25mph)41km/h (25mph)36km/h (22mph)41km/h (26mph)44km/h (28mph)28km/h (17mph)23km/h (14mph)
Direction 295°
WNW
289°
WNW
287°
WNW
275°
W
283°
WNW
270°
W
243°
WSW
190°
S
Wind chill-14°C (7°F)-13°C (9°F)-12°C (10°F)-11°C (13°F)-9°C (16°F)-9°C (16°F)-8°C (17°F)-7°C (19°F)
Waves
Height2.1m (6.8ft)1.9m (6.2ft)1.7m (5.7ft)1.6m (5.3ft)1.5m (4.8ft)1.4m (4.6ft)1.3m (4.1ft)1.1m (3.7ft)
Direction 324°
NW
324°
NW
322°
NW
322°
NW
330°
NNW
325°
NW
323°
NW
324°
NW
Period7.2 sec.7.1 sec.6.9 sec.7.0 sec.6.8 sec.6.7 sec.6.7 sec.6.7 sec.
Significant height1.1m (3.6ft)0.7m (2.3ft)0.6m (2ft)0.5m (1.6ft)0.7m (2.3ft)0.6m (2ft)1.4m (4.6ft)1.3m (4.3ft)
Sea water temperature
Water temperature10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)

Sea weather on Sunday 14 December 2025

On Sunday 14 December 2025, the sun will rise at 07:00 and will set at 16:01 on the beach(es) of Otaru. The outside temperature will be a high of 34°F t and a low of 29°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 17.4mph km/h (with gusts up to 24.2mph). Wave height will be up to 3.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature-2°C (28°F)-2°C (29°F)-2°C (29°F)-0°C (31°F)1°C (35°F)1°C (33°F)0°C (32°F)1°C (34°F)
Perceived temperature-6°C (21°F)-5°C (22°F)-6°C (21°F)-5°C (22°F)-4°C (25°F)-6°C (22°F)-6°C (22°F)-4°C (24°F)
Precipitation0in0in0in0in0in0in0in0.1in
Humidity72%69%73%74%82%89%92%96%
Barometric pressure1020 hPa1019 hPa1017 hPa1015 hPa1010 hPa1007 hPa1003 hPa997 hPa
Cloud cover80%100%44%63%100%88%100%100%
Heat index-2°C (28°F)-2°C (29°F)-2°C (29°F)-0°C (31°F)1°C (35°F)1°C (33°F)0°C (32°F)1°C (34°F)
Dew point-6°C (20°F)-7°C (20°F)-6°C (21°F)-4°C (24°F)-1°C (30°F)-1°C (30°F)-1°C (30°F)1°C (33°F)
Wind
Speed11km/h (7mph)9km/h (6mph)12km/h (7mph)18km/h (11mph)24km/h (15mph)28km/h (17mph)25km/h (16mph)24km/h (15mph)
Gusts19km/h (12mph)17km/h (10mph)20km/h (13mph)26km/h (16mph)32km/h (20mph)39km/h (24mph)37km/h (23mph)33km/h (21mph)
Direction 194°
SSW
149°
SSE
129°
SE
123°
ESE
107°
ESE
101°
ESE
77°
ENE
30°
NNE
Wind chill-6°C (21°F)-5°C (22°F)-6°C (21°F)-5°C (22°F)-4°C (25°F)-6°C (22°F)-6°C (22°F)-4°C (24°F)
Waves
Height1.0m (3.4ft)0.9m (3.1ft)0.8m (2.7ft)0.7m (2.3ft)0.6m (2.0ft)0.6m (1.8ft)0.5m (1.7ft)0.5m (1.5ft)
Direction 326°
NW
321°
NW
321°
NW
320°
NW
321°
NW
321°
NW
321°
NW
326°
NW
Period6.6 sec.6.3 sec.6.1 sec.5.7 sec.5.6 sec.5.2 sec.5.1 sec.4.9 sec.
Significant height1.1m (3.6ft)1.0m (3.3ft)0.9m (3ft)0.8m (2.6ft)0.7m (2.3ft)0.7m (2.3ft)0.5m (1.6ft)0.5m (1.6ft)
Sea water temperature
Water temperature10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)

Sea weather on Monday 15 December 2025

On Monday 15 December 2025, the sun will rise at 07:01 and will set at 16:01 on the beach(es) of Otaru. The outside temperature will be a high of 38°F t and a low of 31°F. Precipitation is in the forecast (0.2in 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 34.8mph km/h (with gusts up to 41mph). Wave height will be up to 9.2ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature2°C (35°F)3°C (37°F)2°C (36°F)2°C (36°F)1°C (34°F)-1°C (31°F)-1°C (30°F)-1°C (31°F)
Perceived temperature-3°C (26°F)-4°C (24°F)-5°C (23°F)-5°C (23°F)-7°C (20°F)-9°C (16°F)-9°C (15°F)-9°C (16°F)
Precipitation0.1in0in0in0in0in0in0in0in
Humidity91%90%98%94%88%92%70%65%
Barometric pressure993 hPa993 hPa996 hPa1001 hPa1004 hPa1007 hPa1010 hPa1011 hPa
Cloud cover100%100%100%100%100%100%100%100%
Heat index2°C (35°F)3°C (37°F)2°C (36°F)2°C (36°F)1°C (34°F)-1°C (31°F)-1°C (30°F)-1°C (31°F)
Dew point0°C (32°F)1°C (34°F)2°C (36°F)2°C (35°F)-1°C (31°F)-2°C (29°F)-6°C (21°F)-7°C (20°F)
Wind
Speed21km/h (13mph)43km/h (27mph)56km/h (35mph)50km/h (31mph)50km/h (31mph)48km/h (30mph)43km/h (27mph)49km/h (30mph)
Gusts29km/h (18mph)57km/h (35mph)63km/h (39mph)65km/h (40mph)66km/h (41mph)63km/h (39mph)60km/h (37mph)65km/h (40mph)
Direction 23°
NNE
10°
N
347°
NNW
343°
NNW
323°
NW
307°
NW
285°
WNW
287°
WNW
Wind chill-3°C (26°F)-4°C (24°F)-5°C (23°F)-5°C (23°F)-7°C (20°F)-9°C (16°F)-9°C (15°F)-9°C (16°F)
Waves
Height1.1m (3.5ft)1.7m (5.5ft)2.2m (7.1ft)2.5m (8.3ft)2.8m (9.1ft)2.4m (7.9ft)2.1m (6.9ft)2.0m (6.4ft)
Direction 352°
N
350°
N
348°
NNW
339°
NNW
337°
NNW
334°
NNW
335°
NNW
335°
NNW
Period4.9 sec.5.8 sec.6.4 sec.7.0 sec.7.5 sec.7.6 sec.7.2 sec.7.5 sec.
Significant height1.3m (4.3ft)1.3m (4.3ft)1.5m (4.9ft)1.8m (5.9ft)1.7m (5.6ft)1.3m (4.3ft)1.1m (3.6ft)1.1m (3.6ft)
Sea water temperature
Water temperature10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)

Sea weather on Tuesday 16 December 2025

On Tuesday 16 December 2025, the sun will rise at 07:01 and will set at 16:01 on the beach(es) of Otaru. The outside temperature will be a high of 31°F t and a low of 20°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! Be careful, the sea will be generally rough with a wind speed of up to 33.6mph km/h (with gusts up to 40.4mph). Wave height will be up to 6.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature-1°C (31°F)-1°C (30°F)-2°C (29°F)-3°C (26°F)-4°C (24°F)-6°C (22°F)-7°C (20°F)-6°C (20°F)
Perceived temperature-9°C (17°F)-9°C (16°F)-10°C (14°F)-12°C (10°F)-14°C (7°F)-16°C (3°F)-17°C (1°F)-17°C (2°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity71%67%67%70%76%79%81%81%
Barometric pressure1012 hPa1011 hPa1011 hPa1012 hPa1011 hPa1011 hPa1012 hPa1013 hPa
Cloud cover96%69%95%92%100%100%100%100%
Heat index-1°C (31°F)-1°C (30°F)-2°C (29°F)-3°C (26°F)-4°C (24°F)-6°C (22°F)-7°C (20°F)-6°C (20°F)
Dew point-5°C (23°F)-6°C (21°F)-7°C (19°F)-8°C (18°F)-8°C (18°F)-9°C (16°F)-9°C (15°F)-9°C (15°F)
Wind
Speed44km/h (27mph)46km/h (29mph)45km/h (28mph)48km/h (30mph)50km/h (31mph)54km/h (33mph)52km/h (32mph)49km/h (30mph)
Gusts56km/h (35mph)60km/h (37mph)58km/h (36mph)58km/h (36mph)58km/h (36mph)65km/h (41mph)65km/h (40mph)58km/h (36mph)
Direction 278°
W
276°
W
278°
W
276°
W
278°
W
275°
W
273°
W
271°
W
Wind chill-9°C (17°F)-9°C (16°F)-10°C (14°F)-12°C (10°F)-14°C (7°F)-16°C (3°F)-17°C (1°F)-17°C (2°F)
Waves
Height1.9m (6.3ft)1.9m (6.3ft)2.0m (6.5ft)1.9m (6.3ft)1.8m (6.0ft)1.8m (6.1ft)2.0m (6.6ft)2.0m (6.7ft)
Direction 329°
NNW
319°
NW
319°
NW
319°
NW
321°
NW
322°
NW
319°
NW
317°
NW
Period7.6 sec.7.8 sec.8.0 sec.8.0 sec.8.0 sec.8.2 sec.8.3 sec.8.3 sec.
Significant height1.1m (3.6ft)1.4m (4.6ft)0.8m (2.6ft)0.7m (2.3ft)0.6m (2ft)0.6m (2ft)0.8m (2.6ft)0.6m (2ft)
Sea water temperature
Water temperature10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)

Sea weather on Wednesday 17 December 2025

On Wednesday 17 December 2025, the sun will rise at 07:02 and will set at 16:02 on the beach(es) of Otaru. The outside temperature will be a high of 23°F t and a low of 22°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! Be careful, the sea will be generally rough with a wind speed of up to 30.5mph km/h (with gusts up to 36mph). Wave height will be up to 6.9ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature-6°C (21°F)-6°C (21°F)-6°C (22°F)-5°C (23°F)-5°C (23°F)-5°C (23°F)-6°C (22°F)-5°C (23°F)
Perceived temperature-17°C (2°F)-16°C (3°F)-15°C (4°F)-14°C (7°F)-14°C (7°F)-13°C (8°F)-14°C (7°F)-13°C (9°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity81%79%80%81%79%78%81%82%
Barometric pressure1013 hPa1013 hPa1014 hPa1015 hPa1015 hPa1015 hPa1016 hPa1016 hPa
Cloud cover100%100%100%100%100%100%100%100%
Heat index-6°C (21°F)-6°C (21°F)-6°C (22°F)-5°C (23°F)-5°C (23°F)-5°C (23°F)-6°C (22°F)-5°C (23°F)
Dew point-9°C (16°F)-9°C (16°F)-9°C (16°F)-8°C (18°F)-8°C (18°F)-8°C (17°F)-8°C (17°F)-8°C (18°F)
Wind
Speed49km/h (30mph)47km/h (29mph)42km/h (26mph)37km/h (23mph)37km/h (23mph)34km/h (21mph)30km/h (19mph)28km/h (18mph)
Gusts58km/h (36mph)55km/h (34mph)51km/h (32mph)44km/h (27mph)44km/h (27mph)43km/h (27mph)41km/h (26mph)37km/h (23mph)
Direction 270°
W
271°
W
267°
W
264°
W
254°
WSW
253°
WSW
250°
WSW
267°
W
Wind chill-17°C (2°F)-16°C (3°F)-15°C (4°F)-14°C (7°F)-14°C (7°F)-13°C (8°F)-14°C (7°F)-13°C (9°F)
Waves
Height1.9m (6.3ft)1.9m (6.2ft)2.0m (6.7ft)2.1m (6.9ft)2.1m (6.9ft)2.0m (6.7ft)1.7m (5.7ft)1.4m (4.7ft)
Direction 317°
NW
318°
NW
314°
NW
313°
NW
310°
NW
308°
NW
308°
NW
306°
NW
Period8.2 sec.8.1 sec.7.9 sec.8.8 sec.8.7 sec.8.9 sec.8.3 sec.8.0 sec.
Significant height0.6m (2ft)0.9m (3ft)1.1m (3.6ft)0.9m (3ft)1.0m (3.3ft)0.8m (2.6ft)0.5m (1.6ft)0.5m (1.6ft)
Sea water temperature
Water temperature10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)

Sea weather on Thursday 18 December 2025

On Thursday 18 December 2025, the sun will rise at 07:03 and will set at 16:02 on the beach(es) of Otaru. The outside temperature will be a high of 31°F t and a low of 25°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 18.6mph km/h (with gusts up to 24.2mph). Wave height will be up to 3.9ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature-4°C (24°F)-4°C (25°F)-4°C (26°F)-2°C (28°F)-1°C (30°F)-2°C (29°F)-3°C (26°F)-3°C (27°F)
Perceived temperature-12°C (10°F)-11°C (12°F)-10°C (13°F)-9°C (16°F)-8°C (18°F)-8°C (17°F)-9°C (15°F)-8°C (17°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity83%82%78%74%69%68%73%74%
Barometric pressure1017 hPa1019 hPa1020 hPa1022 hPa1022 hPa1023 hPa1025 hPa1026 hPa
Cloud cover100%100%100%100%99%82%35%26%
Heat index-4°C (24°F)-4°C (25°F)-4°C (26°F)-2°C (28°F)-1°C (30°F)-2°C (29°F)-3°C (26°F)-3°C (27°F)
Dew point-7°C (20°F)-7°C (20°F)-7°C (20°F)-6°C (21°F)-6°C (21°F)-7°C (20°F)-7°C (19°F)-7°C (19°F)
Wind
Speed30km/h (19mph)24km/h (15mph)24km/h (15mph)26km/h (16mph)30km/h (19mph)27km/h (17mph)19km/h (12mph)15km/h (9mph)
Gusts39km/h (24mph)33km/h (20mph)33km/h (21mph)33km/h (21mph)38km/h (23mph)39km/h (24mph)34km/h (21mph)26km/h (16mph)
Direction 273°
W
268°
W
256°
WSW
263°
W
269°
W
259°
WSW
250°
WSW
239°
WSW
Wind chill-12°C (10°F)-11°C (12°F)-10°C (13°F)-9°C (16°F)-8°C (18°F)-8°C (17°F)-9°C (15°F)-8°C (17°F)
Waves
Height1.2m (4.0ft)1.0m (3.4ft)1.0m (3.1ft)0.9m (3.1ft)0.9m (2.9ft)0.8m (2.6ft)0.7m (2.4ft)0.7m (2.3ft)
Direction 311°
NW
318°
NW
315°
NW
312°
NW
319°
NW
317°
NW
315°
NW
320°
NW
Period7.5 sec.6.9 sec.6.9 sec.6.2 sec.6.4 sec.6.0 sec.5.8 sec.5.8 sec.
Significant height0.3m (1ft)1.3m (4.3ft)1.2m (3.9ft)1.0m (3.3ft)1.3m (4.3ft)0.9m (3ft)0.8m (2.6ft)1.0m (3.3ft)
Sea water temperature
Water temperature10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)

Sea weather on Friday 19 December 2025

On Friday 19 December 2025, the sun will rise at 07:03 and will set at 16:02 on the beach(es) of Otaru. The outside temperature will be a high of 38°F t and a low of 27°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 2.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature-3°C (26°F)-3°C (27°F)-3°C (27°F)-0°C (32°F)1°C (33°F)2°C (35°F)2°C (35°F)3°C (37°F)
Perceived temperature-8°C (17°F)-6°C (20°F)-6°C (21°F)-3°C (26°F)-3°C (26°F)-1°C (30°F)-1°C (31°F)1°C (34°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity74%75%74%73%74%80%80%84%
Barometric pressure1027 hPa1028 hPa1028 hPa1028 hPa1027 hPa1025 hPa1026 hPa1025 hPa
Cloud cover8%0%6%36%7%48%50%90%
Heat index-3°C (26°F)-3°C (27°F)-3°C (27°F)-0°C (32°F)1°C (33°F)2°C (35°F)2°C (35°F)3°C (37°F)
Dew point-7°C (19°F)-7°C (20°F)-7°C (20°F)-4°C (24°F)-3°C (26°F)-1°C (30°F)-1°C (29°F)0°C (33°F)
Wind
Speed13km/h (8mph)10km/h (6mph)8km/h (5mph)10km/h (6mph)12km/h (8mph)10km/h (6mph)8km/h (5mph)6km/h (4mph)
Gusts24km/h (15mph)18km/h (11mph)16km/h (10mph)15km/h (9mph)19km/h (12mph)16km/h (10mph)14km/h (9mph)10km/h (6mph)
Direction 227°
SW
207°
SSW
175°
S
156°
SSE
136°
SE
154°
SSE
171°
S
187°
S
Wind chill-8°C (17°F)-6°C (20°F)-6°C (21°F)-3°C (26°F)-3°C (26°F)-1°C (30°F)-1°C (31°F)1°C (34°F)
Waves
Height0.6m (2.1ft)0.6m (2.0ft)0.6m (1.8ft)0.5m (1.7ft)0.5m (1.6ft)0.5m (1.8ft)0.7m (2.2ft)0.8m (2.5ft)
Direction 318°
NW
318°
NW
318°
NW
315°
NW
302°
WNW
284°
WNW
287°
WNW
291°
WNW
Period5.5 sec.5.5 sec.5.4 sec.5.1 sec.6.2 sec.7.1 sec.8.0 sec.8.8 sec.
Significant height0.8m (2.6ft)0.8m (2.6ft)0.9m (3ft)0.6m (2ft)0.5m (1.6ft)0.6m (2ft)0.7m (2.3ft)1.1m (3.6ft)
Sea water temperature
Water temperature10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)10°C (50°F)

Sea weather chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

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