Sea weather in Asahi in Japan All the beach weather in Asahi

All the essential weather information for enjoying the beach in Asahi 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 Asahi over the next 7 days?

Discover the best moment to go to the beach in Asahi in Japan this week to enjoy the best weather and calmest sea possible. Our opinion is based on reliable sea weather forecasts in Asahi. 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 202547°F to 58°Fdiscouraged
Monday 15 December 202549°F to 54°Fdiscouraged
Tuesday 16 December 202549°F to 52°Frecommended
Wednesday 17 December 202549°F to 54°Frecommended
Thursday 18 December 202550°F to 54°Fdiscouraged
Friday 19 December 202552°F to 59°Frecommended
Saturday 20 December 202559°F to 65°Fdiscouraged

Sea Weather: Your daily and hourly sea weather in Asahi

Sea weather on Sunday 14 December 2025

On Sunday 14 December 2025, the sun will rise at 06:38 and will set at 16:24 on the beach(es) of Asahi. The outside temperature will be a high of 58°F t and a low of 47°F. Precipitation is in the forecast (0.4in 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 18.6mph km/h (with gusts up to 26.1mph). Wave height will be up to 8.2ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature12°C (54°F)14°C (56°F)9°C (48°F)9°C (48°F)11°C (51°F)11°C (52°F)11°C (52°F)12°C (53°F)
Perceived temperature10°C (50°F)11°C (52°F)5°C (41°F)6°C (43°F)7°C (45°F)9°C (48°F)9°C (49°F)9°C (49°F)
Precipitation0.1in0.1in0in0.2in0in0in0in0in
Humidity89%90%91%95%93%80%78%65%
Barometric pressure1018 hPa1012 hPa1008 hPa1004 hPa996 hPa998 hPa999 hPa1001 hPa
Cloud cover100%100%80%100%69%42%73%0%
Heat index12°C (54°F)14°C (56°F)9°C (48°F)9°C (48°F)11°C (51°F)11°C (52°F)11°C (52°F)12°C (53°F)
Dew point10°C (51°F)12°C (53°F)8°C (46°F)8°C (47°F)10°C (49°F)8°C (46°F)7°C (45°F)5°C (42°F)
Wind
Speed21km/h (13mph)29km/h (18mph)30km/h (19mph)21km/h (13mph)30km/h (19mph)17km/h (10mph)13km/h (8mph)23km/h (14mph)
Gusts28km/h (18mph)42km/h (26mph)39km/h (24mph)28km/h (17mph)41km/h (26mph)23km/h (14mph)21km/h (13mph)34km/h (21mph)
Direction 136°
SE
150°
SSE
275°
W
349°
NNW
328°
NNW
244°
WSW
299°
WNW
299°
WNW
Wind chill10°C (50°F)11°C (52°F)5°C (41°F)6°C (43°F)7°C (45°F)9°C (48°F)9°C (49°F)9°C (49°F)
Waves
Height1.3m (4.1ft)1.8m (6.1ft)1.5m (5.0ft)1.6m (5.3ft)2.1m (6.9ft)2.5m (8.4ft)2.5m (8.3ft)2.4m (7.8ft)
Direction 85°
E
134°
SE
126°
SE
135°
SE
137°
SE
136°
SE
142°
SE
147°
SSE
Period10.6 sec.11.4 sec.6.9 sec.7.9 sec.9.5 sec.10.9 sec.11.1 sec.10.9 sec.
Significant height1.4m (4.6ft)1.6m (5.2ft)0.9m (3ft)0.6m (2ft)0.9m (3ft)0.4m (1.3ft)0.4m (1.3ft)1.2m (3.9ft)
Sea water temperature
Water temperature19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)

Sea weather on Monday 15 December 2025

On Monday 15 December 2025, the sun will rise at 06:39 and will set at 16:24 on the beach(es) of Asahi. The outside temperature will be a high of 54°F t and a low of 49°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 24.9mph km/h (with gusts up to 34.8mph). Wave height will be up to 6.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature11°C (51°F)11°C (51°F)10°C (50°F)11°C (51°F)12°C (53°F)9°C (48°F)9°C (48°F)10°C (49°F)
Perceived temperature8°C (46°F)7°C (45°F)6°C (43°F)7°C (45°F)9°C (48°F)5°C (41°F)6°C (42°F)7°C (45°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity57%44%53%48%37%34%37%47%
Barometric pressure1003 hPa1005 hPa1009 hPa1013 hPa1014 hPa1016 hPa1019 hPa1020 hPa
Cloud cover0%5%2%5%14%2%5%3%
Heat index11°C (51°F)11°C (51°F)10°C (50°F)11°C (51°F)12°C (53°F)9°C (48°F)9°C (48°F)10°C (49°F)
Dew point3°C (37°F)-1°C (30°F)1°C (34°F)0°C (32°F)-2°C (28°F)-6°C (21°F)-5°C (23°F)-1°C (30°F)
Wind
Speed25km/h (16mph)40km/h (25mph)38km/h (24mph)28km/h (17mph)27km/h (17mph)32km/h (20mph)23km/h (15mph)19km/h (12mph)
Gusts37km/h (23mph)56km/h (35mph)51km/h (32mph)35km/h (22mph)36km/h (22mph)34km/h (21mph)41km/h (26mph)25km/h (16mph)
Direction 274°
W
292°
WNW
292°
WNW
300°
WNW
307°
NW
316°
NW
332°
NNW
350°
N
Wind chill8°C (46°F)7°C (45°F)6°C (43°F)7°C (45°F)9°C (48°F)5°C (41°F)6°C (42°F)7°C (45°F)
Waves
Height2.0m (6.7ft)1.7m (5.6ft)1.6m (5.2ft)1.4m (4.6ft)1.2m (4.1ft)1.1m (3.6ft)1.0m (3.2ft)0.9m (2.9ft)
Direction 148°
SSE
147°
SSE
144°
SE
139°
SE
138°
SE
133°
SE
132°
SE
131°
SE
Period10.7 sec.10.3 sec.10.1 sec.9.9 sec.9.3 sec.9.2 sec.9.1 sec.8.9 sec.
Significant height1.2m (3.9ft)1.4m (4.6ft)1.7m (5.6ft)1.8m (5.9ft)1.4m (4.6ft)1.1m (3.6ft)1.0m (3.3ft)0.9m (3ft)
Sea water temperature
Water temperature19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)

Sea weather on Tuesday 16 December 2025

On Tuesday 16 December 2025, the sun will rise at 06:39 and will set at 16:24 on the beach(es) of Asahi. The outside temperature will be a high of 52°F t and a low of 49°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 6.8mph km/h (with gusts up to 10.6mph). Wave height will be up to 3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature9°C (48°F)9°C (48°F)9°C (49°F)10°C (50°F)10°C (50°F)10°C (50°F)10°C (49°F)10°C (50°F)
Perceived temperature8°C (46°F)8°C (47°F)8°C (47°F)10°C (50°F)9°C (48°F)8°C (47°F)10°C (49°F)8°C (47°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity46%46%48%52%64%64%60%54%
Barometric pressure1021 hPa1021 hPa1021 hPa1021 hPa1019 hPa1018 hPa1019 hPa1019 hPa
Cloud cover11%47%86%97%100%100%67%0%
Heat index9°C (48°F)9°C (48°F)9°C (49°F)10°C (50°F)10°C (50°F)10°C (50°F)10°C (49°F)10°C (50°F)
Dew point-2°C (29°F)-2°C (28°F)-1°C (30°F)1°C (34°F)4°C (38°F)3°C (38°F)2°C (36°F)1°C (34°F)
Wind
Speed9km/h (6mph)7km/h (4mph)7km/h (4mph)5km/h (3mph)9km/h (5mph)11km/h (7mph)5km/h (3mph)11km/h (7mph)
Gusts13km/h (8mph)10km/h (6mph)10km/h (6mph)6km/h (4mph)12km/h (7mph)15km/h (10mph)7km/h (4mph)17km/h (10mph)
Direction 339°
NNW
349°
NNW
348°
NNW
42°
NE
15°
NNE

N
310°
NW
245°
WSW
Wind chill8°C (46°F)8°C (47°F)8°C (47°F)10°C (50°F)9°C (48°F)8°C (47°F)10°C (49°F)8°C (47°F)
Waves
Height0.8m (2.6ft)0.8m (2.8ft)0.9m (2.8ft)0.8m (2.6ft)0.7m (2.3ft)0.7m (2.2ft)0.7m (2.2ft)0.7m (2.2ft)
Direction 123°
ESE
59°
ENE
56°
NE
60°
ENE
67°
ENE
69°
ENE
70°
ENE
71°
ENE
Period9.1 sec.12.8 sec.12.5 sec.12.4 sec.13.0 sec.13.3 sec.13.1 sec.13.0 sec.
Significant height0.6m (2ft)0.7m (2.3ft)0.8m (2.6ft)0.8m (2.6ft)0.6m (2ft)0.6m (2ft)0.7m (2.3ft)0.6m (2ft)
Sea water temperature
Water temperature19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)

Sea weather on Wednesday 17 December 2025

On Wednesday 17 December 2025, the sun will rise at 06:40 and will set at 16:25 on the beach(es) of Asahi. The outside temperature will be a high of 54°F t and a low of 49°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 16.2mph). Wave height will be up to 2.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature9°C (49°F)9°C (48°F)9°C (48°F)10°C (51°F)11°C (52°F)11°C (52°F)12°C (54°F)12°C (53°F)
Perceived temperature8°C (46°F)7°C (45°F)7°C (44°F)9°C (49°F)11°C (52°F)11°C (51°F)11°C (52°F)10°C (50°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity52%48%50%45%43%50%66%73%
Barometric pressure1018 hPa1017 hPa1018 hPa1020 hPa1018 hPa1018 hPa1019 hPa1020 hPa
Cloud cover0%4%7%4%4%74%100%100%
Heat index9°C (49°F)9°C (48°F)9°C (48°F)10°C (51°F)11°C (52°F)11°C (52°F)12°C (54°F)12°C (53°F)
Dew point-0°C (32°F)-1°C (29°F)-1°C (30°F)-1°C (30°F)-1°C (31°F)1°C (34°F)6°C (43°F)7°C (45°F)
Wind
Speed9km/h (5mph)10km/h (6mph)12km/h (7mph)9km/h (5mph)5km/h (3mph)7km/h (4mph)11km/h (7mph)19km/h (12mph)
Gusts13km/h (8mph)16km/h (10mph)18km/h (11mph)12km/h (7mph)8km/h (5mph)13km/h (8mph)17km/h (10mph)26km/h (16mph)
Direction 279°
W
309°
NW
325°
NW
332°
NNW
337°
NNW
52°
NE
49°
NE
18°
NNE
Wind chill8°C (46°F)7°C (45°F)7°C (44°F)9°C (49°F)11°C (52°F)11°C (51°F)11°C (52°F)10°C (50°F)
Waves
Height0.6m (2.1ft)0.7m (2.3ft)0.6m (2.1ft)0.6m (2.0ft)0.8m (2.5ft)0.8m (2.7ft)0.7m (2.5ft)0.7m (2.4ft)
Direction 72°
ENE
76°
ENE
76°
ENE
80°
E
80°
E
81°
E
76°
ENE
76°
ENE
Period12.8 sec.12.2 sec.12.0 sec.11.5 sec.11.0 sec.11.0 sec.10.9 sec.4.5 sec.
Significant height0.6m (2ft)0.7m (2.3ft)0.7m (2.3ft)0.6m (2ft)0.8m (2.6ft)0.7m (2.3ft)0.6m (2ft)0.6m (2ft)
Sea water temperature
Water temperature19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)

Sea weather on Thursday 18 December 2025

On Thursday 18 December 2025, the sun will rise at 06:41 and will set at 16:25 on the beach(es) of Asahi. The outside temperature will be a high of 54°F t and a low of 50°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 23mph). Wave height will be up to 4.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature12°C (53°F)11°C (52°F)11°C (51°F)11°C (52°F)11°C (52°F)10°C (51°F)10°C (51°F)11°C (51°F)
Perceived temperature9°C (49°F)8°C (47°F)8°C (46°F)8°C (46°F)8°C (46°F)7°C (45°F)8°C (46°F)9°C (48°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity74%76%72%61%59%63%63%62%
Barometric pressure1020 hPa1021 hPa1022 hPa1025 hPa1024 hPa1025 hPa1027 hPa1027 hPa
Cloud cover100%100%100%89%73%100%100%88%
Heat index12°C (53°F)11°C (52°F)11°C (51°F)11°C (52°F)11°C (52°F)10°C (51°F)10°C (51°F)11°C (51°F)
Dew point7°C (45°F)7°C (45°F)6°C (43°F)4°C (39°F)3°C (38°F)4°C (38°F)4°C (38°F)4°C (39°F)
Wind
Speed22km/h (14mph)28km/h (17mph)30km/h (18mph)30km/h (19mph)30km/h (19mph)28km/h (17mph)22km/h (13mph)15km/h (9mph)
Gusts28km/h (18mph)35km/h (22mph)37km/h (23mph)37km/h (23mph)37km/h (23mph)35km/h (22mph)30km/h (18mph)21km/h (13mph)
Direction 24°
NNE
32°
NNE
28°
NNE
30°
NNE
33°
NNE
38°
NE
40°
NE
66°
ENE
Wind chill9°C (49°F)8°C (47°F)8°C (46°F)8°C (46°F)8°C (46°F)7°C (45°F)8°C (46°F)9°C (48°F)
Waves
Height0.7m (2.4ft)0.7m (2.4ft)0.8m (2.7ft)1.0m (3.4ft)1.1m (3.8ft)1.3m (4.4ft)1.3m (4.2ft)1.4m (4.5ft)
Direction 73°
ENE
74°
ENE
73°
ENE
73°
ENE
73°
ENE
74°
ENE
73°
ENE
73°
ENE
Period10.5 sec.12.7 sec.16.4 sec.16.1 sec.16.0 sec.16.0 sec.10.7 sec.14.6 sec.
Significant height0.6m (2ft)0.6m (2ft)0.7m (2.3ft)1.1m (3.6ft)1.2m (3.9ft)1.2m (3.9ft)1.1m (3.6ft)1.3m (4.3ft)
Sea water temperature
Water temperature19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)

Sea weather on Friday 19 December 2025

On Friday 19 December 2025, the sun will rise at 06:41 and will set at 16:26 on the beach(es) of Asahi. The outside temperature will be a high of 59°F t and a low of 52°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 12.4mph km/h (with gusts up to 19.9mph). Wave height will be up to 4.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature11°C (52°F)11°C (52°F)12°C (53°F)12°C (54°F)14°C (57°F)14°C (58°F)14°C (58°F)15°C (59°F)
Perceived temperature10°C (49°F)10°C (50°F)11°C (52°F)12°C (53°F)13°C (55°F)13°C (55°F)13°C (55°F)15°C (59°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity61%61%61%64%61%60%60%57%
Barometric pressure1027 hPa1027 hPa1028 hPa1029 hPa1028 hPa1027 hPa1029 hPa1029 hPa
Cloud cover68%43%91%81%68%43%52%100%
Heat index11°C (52°F)11°C (52°F)12°C (53°F)12°C (54°F)14°C (57°F)14°C (58°F)14°C (58°F)15°C (59°F)
Dew point4°C (39°F)4°C (39°F)4°C (40°F)6°C (42°F)6°C (44°F)7°C (44°F)7°C (44°F)7°C (44°F)
Wind
Speed13km/h (8mph)8km/h (5mph)7km/h (4mph)9km/h (6mph)14km/h (9mph)19km/h (12mph)20km/h (13mph)20km/h (13mph)
Gusts17km/h (11mph)11km/h (7mph)10km/h (6mph)13km/h (8mph)20km/h (12mph)27km/h (17mph)32km/h (20mph)31km/h (19mph)
Direction 67°
ENE
36°
NE
82°
E
127°
SE
159°
SSE
162°
SSE
164°
SSE
190°
S
Wind chill10°C (49°F)10°C (50°F)11°C (52°F)12°C (53°F)13°C (55°F)13°C (55°F)13°C (55°F)15°C (59°F)
Waves
Height1.3m (4.4ft)1.3m (4.2ft)1.1m (3.8ft)1.1m (3.5ft)1.0m (3.3ft)1.0m (3.2ft)0.9m (3.1ft)0.9m (3.0ft)
Direction 74°
ENE
75°
ENE
74°
ENE
75°
ENE
76°
ENE
76°
ENE
76°
ENE
76°
ENE
Period14.4 sec.14.0 sec.5.9 sec.5.8 sec.5.3 sec.5.0 sec.12.1 sec.11.9 sec.
Significant height1.2m (3.9ft)1.2m (3.9ft)1.4m (4.6ft)1.2m (3.9ft)0.8m (2.6ft)0.8m (2.6ft)0.7m (2.3ft)0.7m (2.3ft)
Sea water temperature
Water temperature19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)

Sea weather on Saturday 20 December 2025

On Saturday 20 December 2025, the sun will rise at 06:42 and will set at 16:26 on the beach(es) of Asahi. The outside temperature will be a high of 65°F t and a low of 59°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 15.5mph km/h (with gusts up to 24.2mph). Wave height will be up to 3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature16°C (60°F)16°C (60°F)15°C (59°F)16°C (60°F)18°C (64°F)18°C (64°F)18°C (64°F)18°C (64°F)
Perceived temperature16°C (60°F)16°C (60°F)14°C (58°F)16°C (60°F)18°C (64°F)18°C (64°F)18°C (64°F)18°C (64°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity56%60%63%63%59%62%66%71%
Barometric pressure1028 hPa1028 hPa1028 hPa1028 hPa1026 hPa1025 hPa1026 hPa1026 hPa
Cloud cover82%79%94%84%56%88%79%53%
Heat index16°C (60°F)16°C (60°F)15°C (59°F)16°C (60°F)18°C (64°F)18°C (64°F)18°C (64°F)18°C (64°F)
Dew point7°C (45°F)8°C (47°F)8°C (47°F)8°C (47°F)9°C (49°F)11°C (51°F)11°C (52°F)13°C (55°F)
Wind
Speed19km/h (12mph)19km/h (12mph)14km/h (9mph)15km/h (10mph)22km/h (13mph)23km/h (15mph)24km/h (15mph)25km/h (15mph)
Gusts28km/h (17mph)29km/h (18mph)21km/h (13mph)23km/h (15mph)30km/h (19mph)35km/h (22mph)38km/h (23mph)39km/h (24mph)
Direction 205°
SSW
211°
SSW
222°
SW
214°
SSW
192°
SSW
199°
SSW
187°
S
188°
S
Wind chill16°C (60°F)16°C (60°F)14°C (58°F)16°C (60°F)18°C (64°F)18°C (64°F)18°C (64°F)18°C (64°F)
Waves
Height0.9m (2.8ft)0.8m (2.7ft)0.8m (2.7ft)0.8m (2.6ft)0.7m (2.5ft)0.7m (2.4ft)0.7m (2.4ft)0.7m (2.4ft)
Direction 76°
ENE
80°
E
80°
E
80°
E
80°
E
80°
E
81°
E
84°
E
Period11.7 sec.11.4 sec.7.2 sec.11.0 sec.10.8 sec.7.2 sec.7.2 sec.7.3 sec.
Significant height0.7m (2.3ft)0.7m (2.3ft)0.7m (2.3ft)0.6m (2ft)0.6m (2ft)0.6m (2ft)0.7m (2.3ft)0.7m (2.3ft)
Sea water temperature
Water temperature19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)19°C (66°F)

Sea weather chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

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