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
Friday 5 December 202527°F to 32°Fnot recommended
Saturday 6 December 202534°F to 41°Fnot recommended
Sunday 7 December 202538°F to 43°Fdiscouraged
Monday 8 December 202532°F to 40°Fnot recommended
Tuesday 9 December 202529°F to 34°Fnot recommended
Wednesday 10 December 202529°F to 38°Fnot recommended
Thursday 11 December 202525°F to 36°Fnot recommended

Sea Weather: Your daily and hourly sea weather in Otaru

Sea weather on Friday 5 December 2025

On Friday 5 December 2025, the sun will rise at 06:52 and will set at 16:01 on the beach(es) of Otaru. The outside temperature will be a high of 32°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! Be careful, the sea will be generally rough with a wind speed of up to 28.6mph km/h (with gusts up to 34.2mph). Wave height will be up to 6.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature-3°C (27°F)-3°C (26°F)-3°C (27°F)-2°C (29°F)-1°C (31°F)-1°C (30°F)-1°C (30°F)-0°C (32°F)
Perceived temperature-11°C (12°F)-12°C (11°F)-11°C (12°F)-10°C (15°F)-8°C (17°F)-8°C (17°F)-9°C (15°F)-8°C (18°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity84%81%73%70%70%68%67%72%
Barometric pressure1006 hPa1006 hPa1007 hPa1008 hPa1008 hPa1009 hPa1010 hPa1010 hPa
Cloud cover100%100%87%99%100%64%67%100%
Heat index-3°C (27°F)-3°C (26°F)-3°C (27°F)-2°C (29°F)-1°C (31°F)-1°C (30°F)-1°C (30°F)-0°C (32°F)
Dew point-5°C (23°F)-6°C (21°F)-7°C (20°F)-6°C (21°F)-6°C (22°F)-6°C (21°F)-6°C (21°F)-5°C (24°F)
Wind
Speed40km/h (25mph)39km/h (24mph)41km/h (26mph)40km/h (25mph)40km/h (25mph)39km/h (24mph)46km/h (28mph)42km/h (26mph)
Gusts48km/h (30mph)50km/h (31mph)52km/h (32mph)49km/h (30mph)48km/h (30mph)53km/h (33mph)50km/h (31mph)55km/h (34mph)
Direction 278°
W
269°
W
269°
W
277°
W
280°
W
264°
W
268°
W
273°
W
Wind chill-11°C (12°F)-12°C (11°F)-11°C (12°F)-10°C (15°F)-8°C (17°F)-8°C (17°F)-9°C (15°F)-8°C (18°F)
Waves
Height1.7m (5.5ft)1.7m (5.4ft)1.7m (5.6ft)1.7m (5.5ft)1.7m (5.5ft)1.7m (5.7ft)1.8m (6.1ft)2.0m (6.5ft)
Direction 310°
NW
310°
NW
309°
NW
309°
NW
310°
NW
310°
NW
297°
WNW
297°
WNW
Period7.4 sec.7.3 sec.7.3 sec.7.4 sec.7.7 sec.7.4 sec.7.6 sec.6.8 sec.
Significant height1.0m (3.3ft)1.0m (3.3ft)1.1m (3.6ft)1.0m (3.3ft)0.8m (2.6ft)1.0m (3.3ft)1.3m (4.3ft)1.4m (4.6ft)
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 Saturday 6 December 2025

On Saturday 6 December 2025, the sun will rise at 06:53 and will set at 16:01 on the beach(es) of Otaru. The outside temperature will be a high of 41°F t and a low of 34°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 29.8mph km/h (with gusts up to 37.9mph). Wave height will be up to 7.2ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature1°C (34°F)2°C (35°F)3°C (37°F)4°C (39°F)5°C (41°F)5°C (41°F)4°C (38°F)4°C (40°F)
Perceived temperature-7°C (20°F)-5°C (22°F)-4°C (25°F)-2°C (29°F)-0°C (32°F)1°C (34°F)1°C (33°F)1°C (34°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity68%67%68%69%71%78%80%87%
Barometric pressure1011 hPa1013 hPa1015 hPa1016 hPa1016 hPa1016 hPa1016 hPa1016 hPa
Cloud cover89%70%75%82%53%100%99%95%
Heat index1°C (34°F)2°C (35°F)3°C (37°F)4°C (39°F)5°C (41°F)5°C (41°F)4°C (38°F)4°C (40°F)
Dew point-4°C (24°F)-4°C (25°F)-3°C (27°F)-1°C (30°F)0°C (32°F)1°C (34°F)0°C (33°F)2°C (36°F)
Wind
Speed48km/h (30mph)43km/h (27mph)39km/h (24mph)35km/h (21mph)31km/h (19mph)18km/h (11mph)11km/h (7mph)14km/h (9mph)
Gusts61km/h (38mph)58km/h (36mph)55km/h (34mph)47km/h (29mph)45km/h (28mph)29km/h (18mph)20km/h (12mph)23km/h (14mph)
Direction 278°
W
270°
W
264°
W
256°
WSW
251°
WSW
230°
SW
160°
SSE
209°
SSW
Wind chill-7°C (20°F)-5°C (22°F)-4°C (25°F)-2°C (29°F)-0°C (32°F)1°C (34°F)1°C (33°F)1°C (34°F)
Waves
Height2.2m (7.1ft)2.2m (7.2ft)1.9m (6.1ft)1.6m (5.2ft)1.4m (4.7ft)1.2m (3.9ft)1.0m (3.2ft)0.8m (2.7ft)
Direction 298°
WNW
302°
WNW
302°
WNW
300°
WNW
307°
NW
314°
NW
311°
NW
305°
NW
Period6.8 sec.8.7 sec.8.5 sec.7.9 sec.7.4 sec.8.0 sec.6.5 sec.7.2 sec.
Significant height1.5m (4.9ft)1.1m (3.6ft)0.9m (3ft)1.0m (3.3ft)0.8m (2.6ft)1.1m (3.6ft)1.2m (3.9ft)0.9m (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 7 December 2025

On Sunday 7 December 2025, the sun will rise at 06:54 and will set at 16:01 on the beach(es) of Otaru. The outside temperature will be a high of 43°F t and a low of 38°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 17.4mph). Wave height will be up to 2.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature4°C (40°F)5°C (40°F)5°C (40°F)5°C (41°F)5°C (41°F)5°C (41°F)4°C (38°F)4°C (38°F)
Perceived temperature2°C (36°F)3°C (38°F)2°C (36°F)2°C (36°F)3°C (37°F)1°C (35°F)0°C (32°F)0°C (33°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity85%81%81%83%85%86%83%89%
Barometric pressure1015 hPa1014 hPa1013 hPa1013 hPa1011 hPa1012 hPa1013 hPa1012 hPa
Cloud cover100%100%85%49%79%74%74%85%
Heat index4°C (40°F)5°C (40°F)5°C (40°F)5°C (41°F)5°C (41°F)5°C (41°F)4°C (38°F)4°C (38°F)
Dew point2°C (36°F)2°C (35°F)2°C (35°F)2°C (36°F)3°C (37°F)3°C (37°F)1°C (34°F)2°C (36°F)
Wind
Speed9km/h (6mph)6km/h (4mph)9km/h (6mph)10km/h (6mph)12km/h (7mph)17km/h (10mph)15km/h (9mph)13km/h (8mph)
Gusts16km/h (10mph)11km/h (7mph)16km/h (10mph)15km/h (10mph)19km/h (12mph)28km/h (17mph)28km/h (17mph)21km/h (13mph)
Direction 161°
SSE
188°
S
197°
SSW
168°
SSE
205°
SSW
218°
SW
217°
SW
201°
SSW
Wind chill2°C (36°F)3°C (38°F)2°C (36°F)2°C (36°F)3°C (37°F)1°C (35°F)0°C (32°F)0°C (33°F)
Waves
Height0.8m (2.5ft)0.7m (2.3ft)0.6m (2.0ft)0.5m (1.8ft)0.5m (1.5ft)0.4m (1.3ft)0.4m (1.3ft)0.5m (1.5ft)
Direction 295°
WNW
283°
WNW
286°
WNW
305°
NW
308°
NW
304°
WNW
304°
WNW
303°
WNW
Period7.4 sec.7.4 sec.6.8 sec.5.6 sec.5.7 sec.5.0 sec.4.8 sec.4.7 sec.
Significant height0.9m (3ft)0.9m (3ft)0.9m (3ft)0.8m (2.6ft)0.5m (1.6ft)0.6m (2ft)0.7m (2.3ft)0.8m (2.6ft)
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 8 December 2025

On Monday 8 December 2025, the sun will rise at 06:55 and will set at 16:00 on the beach(es) of Otaru. The outside temperature will be a high of 40°F t and a low of 32°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 16.8mph km/h (with gusts up to 24.2mph). Wave height will be up to 2.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature4°C (39°F)3°C (37°F)2°C (35°F)3°C (37°F)4°C (38°F)2°C (35°F)1°C (34°F)1°C (34°F)
Perceived temperature0°C (33°F)-1°C (30°F)-2°C (28°F)1°C (34°F)3°C (37°F)-3°C (26°F)-5°C (23°F)-5°C (24°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity81%80%78%74%67%85%86%69%
Barometric pressure1011 hPa1011 hPa1011 hPa1010 hPa1008 hPa1008 hPa1010 hPa1011 hPa
Cloud cover76%50%84%100%56%100%100%56%
Heat index4°C (39°F)3°C (37°F)2°C (35°F)3°C (37°F)4°C (38°F)2°C (35°F)1°C (34°F)1°C (34°F)
Dew point1°C (34°F)-1°C (31°F)-2°C (29°F)-1°C (30°F)-2°C (28°F)-0°C (31°F)-1°C (30°F)-4°C (25°F)
Wind
Speed15km/h (9mph)16km/h (10mph)13km/h (8mph)6km/h (4mph)4km/h (2mph)23km/h (15mph)27km/h (17mph)25km/h (15mph)
Gusts23km/h (14mph)26km/h (16mph)23km/h (14mph)9km/h (6mph)6km/h (4mph)31km/h (19mph)39km/h (24mph)38km/h (24mph)
Direction 221°
SW
232°
SW
215°
SW
191°
S
261°
W
298°
WNW
295°
WNW
269°
W
Wind chill0°C (33°F)-1°C (30°F)-2°C (28°F)1°C (34°F)3°C (37°F)-3°C (26°F)-5°C (23°F)-5°C (24°F)
Waves
Height0.6m (2.0ft)0.7m (2.2ft)0.6m (2.1ft)0.6m (1.9ft)0.5m (1.7ft)0.6m (2.1ft)0.7m (2.3ft)0.8m (2.7ft)
Direction 292°
WNW
301°
WNW
306°
NW
309°
NW
311°
NW
311°
NW
311°
NW
317°
NW
Period5.4 sec.9.2 sec.5.1 sec.5.2 sec.5.4 sec.5.4 sec.4.7 sec.5.1 sec.
Significant height1.0m (3.3ft)0.6m (2ft)1.0m (3.3ft)0.9m (3ft)0.8m (2.6ft)1.1m (3.6ft)0.5m (1.6ft)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 Tuesday 9 December 2025

On Tuesday 9 December 2025, the sun will rise at 06:56 and will set at 16:00 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 (0.1in 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 24.2mph km/h (with gusts up to 34.2mph). Wave height will be up to 6.2ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature0°C (33°F)-1°C (31°F)-1°C (31°F)-1°C (30°F)-1°C (30°F)-1°C (29°F)-2°C (29°F)-1°C (30°F)
Perceived temperature-6°C (21°F)-7°C (19°F)-8°C (18°F)-8°C (18°F)-8°C (17°F)-9°C (15°F)-9°C (15°F)-9°C (16°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity80%81%71%73%76%71%66%66%
Barometric pressure1012 hPa1013 hPa1014 hPa1016 hPa1016 hPa1017 hPa1019 hPa1019 hPa
Cloud cover100%86%78%88%100%76%100%70%
Heat index0°C (33°F)-1°C (31°F)-1°C (31°F)-1°C (30°F)-1°C (30°F)-1°C (29°F)-2°C (29°F)-1°C (30°F)
Dew point-3°C (27°F)-3°C (26°F)-5°C (22°F)-5°C (23°F)-5°C (24°F)-6°C (21°F)-7°C (19°F)-7°C (20°F)
Wind
Speed31km/h (19mph)32km/h (20mph)32km/h (20mph)32km/h (20mph)35km/h (22mph)39km/h (24mph)39km/h (24mph)37km/h (23mph)
Gusts40km/h (25mph)46km/h (29mph)42km/h (26mph)41km/h (25mph)45km/h (28mph)55km/h (34mph)54km/h (34mph)50km/h (31mph)
Direction 282°
WNW
289°
WNW
284°
WNW
278°
W
286°
WNW
276°
W
280°
W
279°
W
Wind chill-6°C (21°F)-7°C (19°F)-8°C (18°F)-8°C (18°F)-8°C (17°F)-9°C (15°F)-9°C (15°F)-9°C (16°F)
Waves
Height1.0m (3.3ft)1.2m (3.9ft)1.4m (4.7ft)1.7m (5.6ft)1.8m (6.0ft)1.9m (6.1ft)1.8m (5.9ft)1.8m (5.9ft)
Direction 313°
NW
306°
NW
302°
WNW
301°
WNW
306°
NW
308°
NW
309°
NW
309°
NW
Period5.2 sec.5.3 sec.5.6 sec.5.6 sec.7.4 sec.7.5 sec.7.3 sec.7.1 sec.
Significant height1.2m (3.9ft)1.2m (3.9ft)1.3m (4.3ft)1.4m (4.6ft)1.1m (3.6ft)1.0m (3.3ft)0.9m (3ft)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 Wednesday 10 December 2025

On Wednesday 10 December 2025, the sun will rise at 06:57 and will set at 16:00 on the beach(es) of Otaru. The outside temperature will be a high of 38°F t and a low of 29°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 23.6mph km/h (with gusts up to 32.3mph). Wave height will be up to 7.2ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature-1°C (29°F)-2°C (29°F)-1°C (29°F)-1°C (31°F)1°C (34°F)2°C (36°F)2°C (35°F)3°C (38°F)
Perceived temperature-9°C (16°F)-9°C (15°F)-9°C (16°F)-7°C (20°F)-4°C (24°F)-4°C (25°F)-5°C (24°F)-3°C (27°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity68%68%63%67%62%67%84%71%
Barometric pressure1019 hPa1020 hPa1021 hPa1022 hPa1020 hPa1018 hPa1017 hPa1015 hPa
Cloud cover58%52%98%51%66%99%100%68%
Heat index-1°C (29°F)-2°C (29°F)-1°C (29°F)-1°C (31°F)1°C (34°F)2°C (36°F)2°C (35°F)3°C (38°F)
Dew point-6°C (20°F)-7°C (20°F)-8°C (18°F)-6°C (21°F)-5°C (23°F)-3°C (26°F)-1°C (30°F)-1°C (29°F)
Wind
Speed35km/h (22mph)38km/h (24mph)35km/h (21mph)27km/h (17mph)26km/h (16mph)32km/h (20mph)30km/h (19mph)35km/h (21mph)
Gusts46km/h (29mph)52km/h (32mph)47km/h (29mph)35km/h (22mph)35km/h (22mph)45km/h (28mph)44km/h (27mph)50km/h (31mph)
Direction 278°
W
278°
W
278°
W
261°
W
236°
WSW
245°
WSW
247°
WSW
258°
WSW
Wind chill-9°C (16°F)-9°C (15°F)-9°C (16°F)-7°C (20°F)-4°C (24°F)-4°C (25°F)-5°C (24°F)-3°C (27°F)
Waves
Height1.9m (6.3ft)2.1m (6.9ft)2.2m (7.2ft)2.2m (7.1ft)1.9m (6.4ft)1.7m (5.5ft)1.5m (4.9ft)1.3m (4.3ft)
Direction 309°
NW
308°
NW
311°
NW
314°
NW
321°
NW
319°
NW
323°
NW
332°
NNW
Period7.2 sec.7.8 sec.8.0 sec.8.0 sec.8.1 sec.7.8 sec.7.4 sec.7.7 sec.
Significant height1.1m (3.6ft)1.1m (3.6ft)1.1m (3.6ft)1.1m (3.6ft)0.8m (2.6ft)0.6m (2ft)0.5m (1.6ft)0.4m (1.3ft)
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 Thursday 11 December 2025

On Thursday 11 December 2025, the sun will rise at 06:58 and will set at 16:01 on the beach(es) of Otaru. The outside temperature will be a high of 36°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! Be careful, the sea will be generally rough with a wind speed of up to 25.5mph km/h (with gusts up to 32.3mph). Wave height will be up to 4.9ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature2°C (35°F)-1°C (31°F)-3°C (27°F)-3°C (27°F)-2°C (28°F)-2°C (28°F)-4°C (25°F)-2°C (28°F)
Perceived temperature-5°C (23°F)-8°C (17°F)-11°C (12°F)-10°C (14°F)-9°C (15°F)-9°C (15°F)-10°C (13°F)-9°C (15°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity83%65%68%69%65%67%72%72%
Barometric pressure1016 hPa1017 hPa1019 hPa1020 hPa1020 hPa1020 hPa1021 hPa1020 hPa
Cloud cover100%58%73%100%100%85%100%100%
Heat index2°C (35°F)-1°C (31°F)-3°C (27°F)-3°C (27°F)-2°C (28°F)-2°C (28°F)-4°C (25°F)-2°C (28°F)
Dew point-1°C (30°F)-6°C (21°F)-8°C (18°F)-7°C (19°F)-8°C (18°F)-8°C (18°F)-8°C (17°F)-7°C (20°F)
Wind
Speed41km/h (25mph)39km/h (24mph)40km/h (25mph)33km/h (20mph)30km/h (19mph)27km/h (17mph)21km/h (13mph)29km/h (18mph)
Gusts52km/h (32mph)52km/h (32mph)52km/h (32mph)40km/h (25mph)38km/h (24mph)37km/h (23mph)36km/h (22mph)40km/h (25mph)
Direction 287°
WNW
283°
WNW
276°
W
289°
WNW
286°
WNW
267°
W
257°
WSW
268°
W
Wind chill-5°C (23°F)-8°C (17°F)-11°C (12°F)-10°C (14°F)-9°C (15°F)-9°C (15°F)-10°C (13°F)-9°C (15°F)
Waves
Height1.2m (3.8ft)1.1m (3.6ft)1.1m (3.5ft)1.0m (3.4ft)1.0m (3.2ft)1.2m (3.8ft)1.4m (4.5ft)1.5m (4.8ft)
Direction 323°
NW
321°
NW
331°
NNW
324°
NW
321°
NW
310°
NW
309°
NW
309°
NW
Period7.1 sec.7.3 sec.6.2 sec.6.2 sec.6.5 sec.8.0 sec.8.0 sec.6.9 sec.
Significant height0.5m (1.6ft)1.2m (3.9ft)1.0m (3.3ft)1.0m (3.3ft)1.4m (4.6ft)0.9m (3ft)0.9m (3ft)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 chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

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