Sea weather in Iwaki in Japan All the beach weather in Iwaki

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

Discover the best moment to go to the beach in Iwaki in Japan this week to enjoy the best weather and calmest sea possible. Our opinion is based on reliable sea weather forecasts in Iwaki. 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 202538°F to 47°Fdiscouraged
Sunday 14 December 202543°F to 50°Fnot recommended
Monday 15 December 202536°F to 49°Fnot recommended
Tuesday 16 December 202541°F to 52°Fdiscouraged
Wednesday 17 December 202541°F to 49°Frecommended
Thursday 18 December 202536°F to 45°Fdiscouraged
Friday 19 December 202540°F to 49°Frecommended

Sea Weather: Your daily and hourly sea weather in Iwaki

Sea weather on Saturday 13 December 2025

On Saturday 13 December 2025, the sun will rise at 06:40 and will set at 16:19 on the beach(es) of Iwaki. The outside temperature will be a high of 47°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 16.8mph km/h (with gusts up to 21.8mph). Wave height will be up to 3.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature3°C (38°F)3°C (38°F)3°C (38°F)5°C (40°F)7°C (45°F)7°C (45°F)7°C (44°F)7°C (44°F)
Perceived temperature-2°C (28°F)-2°C (29°F)-1°C (31°F)1°C (34°F)6°C (42°F)5°C (42°F)4°C (39°F)4°C (38°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity54%60%62%56%37%42%49%73%
Barometric pressure1028 hPa1028 hPa1028 hPa1029 hPa1027 hPa1026 hPa1026 hPa1024 hPa
Cloud cover12%25%100%26%30%16%26%100%
Heat index3°C (38°F)3°C (38°F)3°C (38°F)5°C (40°F)7°C (45°F)7°C (45°F)7°C (44°F)7°C (44°F)
Dew point-5°C (23°F)-4°C (26°F)-3°C (26°F)-4°C (26°F)-6°C (20°F)-5°C (23°F)-3°C (26°F)2°C (36°F)
Wind
Speed27km/h (17mph)27km/h (17mph)17km/h (11mph)16km/h (10mph)8km/h (5mph)9km/h (6mph)14km/h (9mph)15km/h (9mph)
Gusts35km/h (22mph)34km/h (21mph)23km/h (15mph)20km/h (13mph)11km/h (7mph)14km/h (8mph)22km/h (14mph)21km/h (13mph)
Direction 304°
NW
312°
NW
333°
NNW
336°
NNW
340°
NNW
118°
ESE
179°
S
216°
SW
Wind chill-2°C (28°F)-2°C (29°F)-1°C (31°F)1°C (34°F)6°C (42°F)5°C (42°F)4°C (39°F)4°C (38°F)
Waves
Height1.0m (3.3ft)1.1m (3.6ft)1.0m (3.1ft)0.9m (2.9ft)0.8m (2.6ft)0.8m (2.5ft)0.8m (2.5ft)0.7m (2.4ft)
Direction 95°
E
94°
E
94°
E
93°
E
94°
E
96°
E
97°
E
91°
E
Period11.7 sec.11.2 sec.11.1 sec.11.0 sec.11.9 sec.11.9 sec.11.9 sec.11.9 sec.
Significant height1.4m (4.6ft)1.4m (4.6ft)1.0m (3.3ft)0.9m (3ft)0.7m (2.3ft)0.7m (2.3ft)0.8m (2.6ft)0.7m (2.3ft)
Sea water temperature
Water temperature17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)

Sea weather on Sunday 14 December 2025

On Sunday 14 December 2025, the sun will rise at 06:41 and will set at 16:19 on the beach(es) of Iwaki. The outside temperature will be a high of 50°F t and a low of 43°F. Precipitation is in the forecast (0.3in 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 27.3mph km/h (with gusts up to 31.7mph). Wave height will be up to 9.8ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature6°C (42°F)8°C (46°F)8°C (46°F)8°C (46°F)8°C (46°F)9°C (47°F)9°C (49°F)9°C (48°F)
Perceived temperature4°C (40°F)6°C (42°F)4°C (39°F)6°C (44°F)5°C (42°F)6°C (43°F)5°C (40°F)5°C (41°F)
Precipitation0in0.2in0in0in0in0in0in0in
Humidity83%95%90%92%95%87%69%61%
Barometric pressure1020 hPa1013 hPa1010 hPa1007 hPa1001 hPa999 hPa999 hPa1000 hPa
Cloud cover100%100%100%100%100%100%66%4%
Heat index6°C (42°F)8°C (46°F)8°C (46°F)8°C (46°F)8°C (46°F)9°C (47°F)9°C (49°F)9°C (48°F)
Dew point3°C (38°F)7°C (45°F)6°C (43°F)6°C (43°F)7°C (45°F)7°C (44°F)4°C (39°F)2°C (35°F)
Wind
Speed7km/h (4mph)13km/h (8mph)27km/h (17mph)7km/h (4mph)14km/h (9mph)16km/h (10mph)44km/h (28mph)35km/h (22mph)
Gusts10km/h (6mph)18km/h (11mph)40km/h (25mph)10km/h (6mph)22km/h (13mph)24km/h (15mph)48km/h (30mph)51km/h (32mph)
Direction 14°
NNE
25°
NNE
349°
NNW

N
337°
NNW
318°
NW
296°
WNW
274°
W
Wind chill4°C (40°F)6°C (42°F)4°C (39°F)6°C (44°F)5°C (42°F)6°C (43°F)5°C (40°F)5°C (41°F)
Waves
Height0.7m (2.4ft)0.7m (2.4ft)1.2m (3.9ft)1.6m (5.2ft)1.6m (5.2ft)1.6m (5.3ft)3.0m (9.8ft)2.8m (9.3ft)
Direction 91°
E
91°
E
93°
E
142°
SE
136°
SE
135°
SE
137°
SE
149°
SSE
Period11.7 sec.11.7 sec.5.4 sec.6.3 sec.6.3 sec.6.8 sec.10.8 sec.10.3 sec.
Significant height0.7m (2.3ft)0.8m (2.6ft)0.4m (1.3ft)1.2m (3.9ft)1.2m (3.9ft)1.1m (3.6ft)0.6m (2ft)1.1m (3.6ft)
Sea water temperature
Water temperature17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)

Sea weather on Monday 15 December 2025

On Monday 15 December 2025, the sun will rise at 06:42 and will set at 16:20 on the beach(es) of Iwaki. The outside temperature will be a high of 49°F t and a low of 36°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 34.2mph). Wave height will be up to 9.5ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature9°C (48°F)8°C (47°F)7°C (45°F)8°C (46°F)8°C (46°F)6°C (44°F)3°C (37°F)6°C (43°F)
Perceived temperature5°C (41°F)3°C (38°F)3°C (38°F)4°C (39°F)3°C (37°F)2°C (35°F)-3°C (26°F)1°C (34°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity60%62%57%55%51%53%56%55%
Barometric pressure1002 hPa1004 hPa1009 hPa1013 hPa1014 hPa1017 hPa1020 hPa1021 hPa
Cloud cover52%3%4%4%5%5%0%0%
Heat index9°C (48°F)8°C (47°F)7°C (45°F)8°C (46°F)8°C (46°F)6°C (44°F)3°C (37°F)6°C (43°F)
Dew point2°C (35°F)1°C (34°F)-1°C (31°F)-1°C (30°F)-2°C (29°F)-2°C (28°F)-5°C (22°F)-2°C (28°F)
Wind
Speed36km/h (22mph)41km/h (26mph)27km/h (17mph)27km/h (17mph)35km/h (22mph)32km/h (20mph)32km/h (20mph)35km/h (22mph)
Gusts49km/h (30mph)55km/h (34mph)36km/h (23mph)34km/h (21mph)49km/h (31mph)36km/h (23mph)38km/h (24mph)48km/h (30mph)
Direction 261°
W
273°
W
304°
NW
295°
WNW
297°
WNW
295°
WNW
296°
WNW
295°
WNW
Wind chill5°C (41°F)3°C (38°F)3°C (38°F)4°C (39°F)3°C (37°F)2°C (35°F)-3°C (26°F)1°C (34°F)
Waves
Height2.8m (9.3ft)2.9m (9.4ft)2.4m (7.8ft)1.9m (6.2ft)1.6m (5.2ft)1.5m (5.0ft)1.4m (4.5ft)1.2m (4.0ft)
Direction 151°
SSE
156°
SSE
157°
SSE
151°
SSE
140°
SE
116°
ESE
94°
E
69°
ENE
Period10.5 sec.11.0 sec.10.9 sec.10.7 sec.10.3 sec.10.0 sec.11.1 sec.11.1 sec.
Significant height1.6m (5.2ft)1.4m (4.6ft)1.3m (4.3ft)1.4m (4.6ft)1.5m (4.9ft)1.6m (5.2ft)1.3m (4.3ft)1.5m (4.9ft)
Sea water temperature
Water temperature17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)

Sea weather on Tuesday 16 December 2025

On Tuesday 16 December 2025, the sun will rise at 06:43 and will set at 16:20 on the beach(es) of Iwaki. The outside temperature will be a high of 52°F t and a low of 41°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 23.6mph). Wave height will be up to 3.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature6°C (43°F)5°C (42°F)5°C (42°F)8°C (46°F)10°C (51°F)11°C (52°F)10°C (49°F)8°C (46°F)
Perceived temperature2°C (35°F)2°C (36°F)3°C (37°F)5°C (41°F)7°C (45°F)9°C (48°F)8°C (47°F)6°C (44°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity56%63%65%52%44%39%43%58%
Barometric pressure1021 hPa1021 hPa1021 hPa1020 hPa1017 hPa1017 hPa1017 hPa1018 hPa
Cloud cover15%7%17%4%7%11%35%25%
Heat index6°C (43°F)5°C (42°F)5°C (42°F)8°C (46°F)10°C (51°F)11°C (52°F)10°C (49°F)8°C (46°F)
Dew point-2°C (29°F)-1°C (30°F)-1°C (31°F)-2°C (29°F)-1°C (30°F)-2°C (28°F)-2°C (28°F)0°C (32°F)
Wind
Speed27km/h (17mph)15km/h (9mph)12km/h (7mph)16km/h (10mph)24km/h (15mph)19km/h (12mph)10km/h (6mph)8km/h (5mph)
Gusts38km/h (23mph)22km/h (14mph)18km/h (11mph)21km/h (13mph)35km/h (22mph)30km/h (19mph)17km/h (11mph)12km/h (7mph)
Direction 310°
NW
289°
WNW
248°
WSW
220°
SW
212°
SSW
219°
SW
265°
W
315°
NW
Wind chill2°C (35°F)2°C (36°F)3°C (37°F)5°C (41°F)7°C (45°F)9°C (48°F)8°C (47°F)6°C (44°F)
Waves
Height1.1m (3.7ft)1.0m (3.2ft)0.9m (2.9ft)0.8m (2.8ft)0.8m (2.7ft)0.8m (2.7ft)0.8m (2.6ft)0.8m (2.6ft)
Direction 67°
ENE
68°
ENE
73°
ENE
122°
ESE
121°
ESE
67°
ENE
67°
ENE
73°
ENE
Period11.2 sec.11.1 sec.9.0 sec.8.7 sec.8.5 sec.8.5 sec.8.4 sec.11.9 sec.
Significant height1.2m (3.9ft)0.8m (2.6ft)0.8m (2.6ft)0.8m (2.6ft)0.8m (2.6ft)0.8m (2.6ft)0.8m (2.6ft)0.7m (2.3ft)
Sea water temperature
Water temperature17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)

Sea weather on Wednesday 17 December 2025

On Wednesday 17 December 2025, the sun will rise at 06:43 and will set at 16:20 on the beach(es) of Iwaki. The outside temperature will be a high of 49°F t and a low of 41°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 11.8mph). Wave height will be up to 3.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature7°C (44°F)6°C (43°F)5°C (42°F)7°C (44°F)9°C (48°F)9°C (49°F)7°C (44°F)7°C (44°F)
Perceived temperature5°C (41°F)4°C (39°F)3°C (38°F)4°C (40°F)8°C (47°F)7°C (45°F)4°C (39°F)4°C (39°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity69%71%69%59%46%49%57%57%
Barometric pressure1018 hPa1019 hPa1020 hPa1021 hPa1020 hPa1019 hPa1021 hPa1021 hPa
Cloud cover12%7%9%8%50%32%100%100%
Heat index7°C (44°F)6°C (43°F)5°C (42°F)7°C (44°F)9°C (48°F)9°C (49°F)7°C (44°F)7°C (44°F)
Dew point2°C (35°F)1°C (34°F)0°C (32°F)-1°C (31°F)-2°C (29°F)-1°C (30°F)-1°C (30°F)-1°C (30°F)
Wind
Speed9km/h (6mph)11km/h (7mph)10km/h (6mph)10km/h (6mph)6km/h (4mph)12km/h (8mph)13km/h (8mph)13km/h (8mph)
Gusts13km/h (8mph)16km/h (10mph)15km/h (9mph)14km/h (8mph)9km/h (5mph)18km/h (11mph)19km/h (12mph)18km/h (11mph)
Direction 326°
NNW
335°
NNW
337°
NNW
347°
NNW
355°
N
337°
NNW
315°
NW
320°
NW
Wind chill5°C (41°F)4°C (39°F)3°C (38°F)4°C (40°F)8°C (47°F)7°C (45°F)4°C (39°F)4°C (39°F)
Waves
Height0.8m (2.6ft)0.8m (2.6ft)0.7m (2.5ft)0.7m (2.4ft)1.0m (3.2ft)1.0m (3.2ft)0.9m (2.9ft)0.8m (2.8ft)
Direction 74°
ENE
74°
ENE
79°
ENE
79°
ENE
79°
ENE
79°
E
81°
E
83°
E
Period11.3 sec.11.6 sec.11.2 sec.11.0 sec.11.1 sec.11.0 sec.10.8 sec.10.7 sec.
Significant height0.7m (2.3ft)0.7m (2.3ft)0.7m (2.3ft)0.8m (2.6ft)1.2m (3.9ft)1.0m (3.3ft)0.8m (2.6ft)0.8m (2.6ft)
Sea water temperature
Water temperature17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)

Sea weather on Thursday 18 December 2025

On Thursday 18 December 2025, the sun will rise at 06:44 and will set at 16:21 on the beach(es) of Iwaki. The outside temperature will be a high of 45°F t and a low of 36°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 14.9mph km/h (with gusts up to 22.4mph). Wave height will be up to 3.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature7°C (44°F)6°C (43°F)5°C (41°F)6°C (43°F)6°C (43°F)5°C (41°F)2°C (36°F)5°C (40°F)
Perceived temperature5°C (41°F)4°C (40°F)2°C (36°F)2°C (36°F)3°C (37°F)1°C (33°F)-3°C (27°F)2°C (36°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity53%55%59%55%43%48%57%60%
Barometric pressure1021 hPa1021 hPa1023 hPa1024 hPa1024 hPa1025 hPa1027 hPa1029 hPa
Cloud cover100%47%14%0%0%0%0%0%
Heat index7°C (44°F)6°C (43°F)5°C (41°F)6°C (43°F)6°C (43°F)5°C (41°F)2°C (36°F)5°C (40°F)
Dew point-2°C (28°F)-2°C (28°F)-2°C (28°F)-2°C (28°F)-5°C (22°F)-5°C (23°F)-6°C (22°F)-2°C (28°F)
Wind
Speed8km/h (5mph)8km/h (5mph)13km/h (8mph)22km/h (14mph)20km/h (12mph)24km/h (15mph)19km/h (12mph)11km/h (7mph)
Gusts11km/h (7mph)12km/h (8mph)19km/h (12mph)28km/h (17mph)36km/h (22mph)29km/h (18mph)23km/h (14mph)16km/h (10mph)
Direction 305°
NW
325°
NW
341°
NNW
344°
NNW
338°
NNW
328°
NNW
323°
NW
340°
NNW
Wind chill5°C (41°F)4°C (40°F)2°C (36°F)2°C (36°F)3°C (37°F)1°C (33°F)-3°C (27°F)2°C (36°F)
Waves
Height0.8m (2.8ft)0.8m (2.8ft)0.8m (2.8ft)0.9m (3.1ft)1.0m (3.2ft)1.0m (3.2ft)0.9m (3.1ft)0.9m (2.8ft)
Direction 75°
ENE
73°
ENE
73°
ENE
73°
ENE
73°
ENE
71°
ENE
71°
ENE
71°
ENE
Period10.5 sec.10.0 sec.16.2 sec.10.8 sec.10.9 sec.14.8 sec.14.5 sec.14.4 sec.
Significant height0.9m (3ft)0.8m (2.6ft)0.8m (2.6ft)1.1m (3.6ft)1.0m (3.3ft)1.0m (3.3ft)0.9m (3ft)0.9m (3ft)
Sea water temperature
Water temperature17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)

Sea weather on Friday 19 December 2025

On Friday 19 December 2025, the sun will rise at 06:44 and will set at 16:21 on the beach(es) of Iwaki. The outside temperature will be a high of 49°F t and a low of 40°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 14.9mph). 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)4°C (39°F)4°C (39°F)6°C (42°F)6°C (43°F)7°C (44°F)9°C (48°F)8°C (47°F)
Perceived temperature2°C (36°F)2°C (35°F)2°C (36°F)5°C (41°F)4°C (39°F)4°C (39°F)7°C (44°F)6°C (43°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity60%60%57%50%53%62%68%71%
Barometric pressure1029 hPa1030 hPa1031 hPa1032 hPa1030 hPa1030 hPa1031 hPa1031 hPa
Cloud cover0%0%2%0%0%0%17%5%
Heat index4°C (39°F)4°C (39°F)4°C (39°F)6°C (42°F)6°C (43°F)7°C (44°F)9°C (48°F)8°C (47°F)
Dew point-3°C (27°F)-3°C (26°F)-4°C (25°F)-4°C (25°F)-3°C (27°F)0°C (32°F)3°C (38°F)3°C (38°F)
Wind
Speed7km/h (4mph)7km/h (4mph)7km/h (4mph)4km/h (2mph)10km/h (6mph)17km/h (11mph)13km/h (8mph)10km/h (6mph)
Gusts10km/h (6mph)11km/h (7mph)11km/h (7mph)5km/h (3mph)19km/h (12mph)20km/h (13mph)24km/h (15mph)19km/h (12mph)
Direction 317°
NW
303°
WNW
319°
NW
280°
W
193°
SSW
194°
SSW
224°
SW
262°
W
Wind chill2°C (36°F)2°C (35°F)2°C (36°F)5°C (41°F)4°C (39°F)4°C (39°F)7°C (44°F)6°C (43°F)
Waves
Height0.8m (2.6ft)0.8m (2.5ft)0.7m (2.4ft)0.7m (2.4ft)0.7m (2.4ft)0.7m (2.4ft)0.8m (2.5ft)0.8m (2.5ft)
Direction 72°
ENE
70°
ENE
70°
ENE
70°
ENE
71°
ENE
70°
ENE
70°
ENE
75°
ENE
Period14.1 sec.13.4 sec.13.1 sec.13.0 sec.12.7 sec.12.1 sec.11.8 sec.11.4 sec.
Significant height0.8m (2.6ft)0.7m (2.3ft)0.7m (2.3ft)0.7m (2.3ft)0.9m (3ft)0.8m (2.6ft)1.1m (3.6ft)1.0m (3.3ft)
Sea water temperature
Water temperature17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)17°C (62°F)

Sea weather chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

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