Weather in Kōzushima

14-day forecast · updated today, Thursday, October 29, at 1:22 pm (GMT+9)

Now · light drizzle 67 °F

Feels like: 66 °F
Low / high: 66 / 72 °F
Rain: 98% · 0.22 in
Wind: 10 mph NE

→ 30.25 inHg · steady

Today in Kōzushima: drizzle, 66 °F to 72 °F, with a 98% chance of rain (0.22 in) and a gentle breeze from the northeast (10 mph). Tomorrow, drizzle, 69 °F to 73 °F and a 78% chance of rain. The warmest day of the week is Friday 30, at 73 °F.

Temperatures for the next 14 days

72° 66°
Today
73° 69°
Fri 30
72° 69°
Sat 31
69° 67°
Sun 1
73° 69°
Mon 2
73° 69°
Tue 3
69° 66°
Wed 4
68° 65°
Thu 5
72° 67°
Fri 6
66° 64°
Sat 7
66° 63°
Sun 8
67° 62°
Mon 9
64° 62°
Tue 10
65° 61°
Wed 11

Day by day

Day	Sky	Low / high	Rain	Max wind	Max wave	High tides	Model
Today · 29	Drizzle	66 / 72 °F	98% · 0.22 in	22 mph ENE	6.2 ft	7:44 am · 6:12 pm	ECMWF
Fri 30	Drizzle	69 / 73 °F	78% · 0.18 in	16 mph SW	5.4 ft	8:41 am · 6:45 pm	ECMWF
Sat 31	Drizzle	69 / 72 °F	88% · 0.06 in	38 mph W	9.4 ft	9:50 am · 7:24 pm	ECMWF
Sun 1	Overcast	67 / 69 °F	13%	26 mph ENE	8.5 ft	11:18 am · 8:19 pm	ECMWF
Mon 2	Light rain	69 / 73 °F	81% · 0.37 in	32 mph SW	7.5 ft	12:48 pm · 10:18 pm	ECMWF
Tue 3	Light rain	69 / 73 °F	76% · 0.17 in	30 mph NW	8.2 ft	1:44 pm	ECMWF
Wed 4	Light drizzle	66 / 69 °F	64% · 0.00 in	33 mph NE	9.9 ft	12:45 am · 2:21 pm	ECMWF
Thu 5	Overcast	65 / 68 °F	76%	32 mph NNE	9.8 ft	2:16 am · 2:51 pm	ECMWF
Fri 6	Partly cloudy	67 / 72 °F	60%	27 mph W	9.3 ft	3:19 am · 3:18 pm	ECMWF
Sat 7	Overcast	64 / 66 °F	24%	28 mph NE	8.6 ft	4:09 am · 3:44 pm	ECMWF
Sun 8	Drizzle	63 / 66 °F	35% · 0.30 in	26 mph NE	7.0 ft	4:52 am · 4:09 pm	ECMWF
Mon 9	Light drizzle	62 / 67 °F	35% · 0.03 in	30 mph NNE	6.8 ft	5:32 am · 4:33 pm	ECMWF
Tue 10	Clear sky	62 / 64 °F	39%	33 mph W	8.9 ft	6:09 am · 4:58 pm	ECMWF
Wed 11	Mainly clear	61 / 65 °F	35%	31 mph WNW	8.3 ft	6:45 am · 5:22 pm	ECMWF

Each day comes from the best model covering this spot: regional ones first (HRRR and NBM in the U.S., AROME, ICON-EU), then ECMWF; day 16, NOAA GFS. Waves: Météo-France up to day 10, then ECMWF WAM, coarser and further offshore. High tides: our own tide calculation.

Today, every 3 hours

Time	12:00 am	3:00 am	6:00 am	9:00 am	12:00 pm	3:00 pm	6:00 pm	9:00 pm
Sky	Clear	Light drizzle	Light drizzle	Drizzle	Light drizzle	Light drizzle	Mainly clear	Partly cloudy
Temperature	67°	66°	66°	66°	68°	67°	69°	70°
Chance of rain	73%	69%	75%	96%	94%	75%	27%	18%
Rain	0.00 in	0.01 in	0.01 in	0.03 in	0.02 in	0.01 in	0.00 in	0.00 in
Wind (mph)	22 NE	20 NE	19 ENE	14 ESE	7 ENE	15 NNE	9 NNE	6 NE
Humidity	65%	71%	73%	76%	70%	83%	77%	75%
UV	0	0	0	2	3	1	0	0
Model	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF

Do the models agree?

Low confidence

They don't agree on wind on Saturday 31: it may change, so check again closer to the day.

What 4 forecast models say for the next few days. The closer they are, the more reliable the forecast.

HighRainWind

Do the models agree? · High
High (°F)	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	72°	73°	72°	69°	73°	73°	69°
AIFS	70°	71°	71°	70°	73°	70°	69°
GFS	72°	71°	71°	72°	75°	71°	69°
ICON	70°	72°	72°	74°	75°	72°	70°
Confidence	high	high	high	high	high	high	high

Do the models agree? · Rain
Rain	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	0.22 in	0.18 in	0.06 in	0	0.37 in	0.17 in	0.00 in
AIFS	0.13 in	0.19 in	0.17 in	0	0.31 in	0.13 in	0.54 in
GFS	0.06 in	0.05 in	0.01 in	0.09 in	0.43 in	0.18 in	0.63 in
ICON	0.20 in	0.22 in	0.03 in	0.00 in	0.05 in	0	0.36 in
Confidence	high	high	medium	medium	medium	medium	medium

Do the models agree? · Wind
Wind (mph)	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	2230	1626	3852	2637	3241	3042	3347
AIFS	21	10	28	16	21	14	28
GFS	2321	1722	4143	2920	3748	2826	3434
ICON	2432	2027	3654	1928	2537	2332	2639
Confidence	high	medium	low	medium	low	low	medium

Chance of rain from the ensemble models

Model	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF (51 scenarios)	98%	78%	88%	13%	81%	76%	64%
GFS (GEFS, 31 scenarios)	90%	84%	45%	71%	66%	68%	62%

Each model's day runs midnight to midnight local time; models that reach fewer days are left blank. Rain: daily total. Wind: the day's highest average wind and, in small type, the strongest gust. Highlighted: values that stand out from the rest. The chance of rain comes from many runs of the same model with slightly different starting data.

Outlook

How the coming weeks and months compare with what is normal for the time of year. It is a trend, not a day-by-day forecast.

Next few weeks, compared with normal: normal temperatures, normal rain and a slightly cooler sea.

Next 6 weeks

When	TemperatureTemp.	Rain	Sea	Typical high / low
Nov 2 – Nov 8Nov 2–Nov 8	Normal +0.4 °F	A bit above +28%	A bit below −0.5 °F	—
Nov 9 – Nov 15Nov 9–Nov 15	Normal −0.4 °F	Normal	A bit below −0.5 °F	—
Nov 16 – Nov 22Nov 16–Nov 22	Normal +0.7 °F	Normal	A bit below −0.7 °F	65° / 63°
Nov 23 – Nov 29Nov 23–Nov 29	A bit above +1.6 °F	Normal	A bit below −0.5 °F	64° / 61°
Nov 30 – Dec 6Nov 30–Dec 6	A bit above +1.6 °F	Normal	Normal −0.2 °F	62° / 60°

Coming months

When	TemperatureTemp.	Rain	Sea
November	Above +2.9 °F	A bit above +25%	Above +2.0 °F
December	A bit above +2.5 °F	A bit above +30%	Above +1.8 °F
January	A bit above +2.5 °F	Normal	A bit above +1.6 °F
February	Above +3.1 °F	Normal	A bit above +1.3 °F
March	A bit above +2.5 °F	Normal	A bit above +1.4 °F

Weeks: ECMWF 46-day (average of its scenarios), against the normal of the last 20 years for those dates. Months: ECMWF SEAS5. Rain: total against normal. The further ahead, the closer it gets to normal and the less detail it can give.

Kōzushima climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit Kōzushima is from July to August and in May: highs of 71 °F to 84 °F, about 13 rainy days a month and 6 hours of sunshine a day.

Typhoon season: from July to October, peaking in September. In the last 30 years (1996–2025), 34 tropical cyclones passed within 93 mi of Kōzushima, one or two a year; 18 of them with hurricane-force winds (74 mph or more). The most recent: Peipah, in September 2025.

56° 46°

JanJ
55° 44°

FebF
59° 48°

MarM
65° 54°

AprA
71° 61°

MayM
75° 67°

JunJ
81° 73°

JulJ
84° 75°

AugA
80° 71°

SepS
73° 64°

OctO
67° 57°

NovN
60° 50°

DecD

Highs and lows
Monthly rainfall
Best time

Month	High	Low	Rain	Rainy daysDays	Sun (h/day)	Water	Waves	Cyclones
JanuaryJan	56°	46°	4.20 in	7	4.7	64°	7.7 ft	–
FebruaryFeb	55°	44°	5.24 in	8	4.9	63°	7.3 ft	–
MarchMar	59°	48°	7.87 in	12	5.5	64°	7.0 ft	–
AprilApr	65°	54°	7.43 in	11	5.7	65°	6.1 ft	–
MayMay	71°	61°	8.43 in	12	5.8	69°	5.0 ft	1
JuneJun	75°	67°	12.16 in	15	4.1	72°	5.3 ft	1
JulyJul	81°	73°	7.96 in	14	5.6	77°	5.3 ft	8
AugustAug	84°	75°	6.95 in	13	7.2	81°	5.6 ft	7
SeptemberSep	80°	71°	10.41 in	15	5.3	79°	6.2 ft	9
OctoberOct	73°	64°	11.16 in	14	4.1	75°	7.0 ft	8
NovemberNov	67°	57°	7.44 in	11	4.0	72°	6.2 ft	–
DecemberDec	60°	50°	4.69 in	8	4.4	68°	7.4 ft	–

Month	Water	Waves	Cyclones
Jan	64°	7.7 ft	–
Feb	63°	7.3 ft	–
Mar	64°	7.0 ft	–
Apr	65°	6.1 ft	–
May	69°	5.0 ft	1
Jun	72°	5.3 ft	1
Jul	77°	5.3 ft	8
Aug	81°	5.6 ft	7
Sep	79°	6.2 ft	9
Oct	75°	7.0 ft	8
Nov	72°	6.2 ft	–
Dec	68°	7.4 ft	–

Days: rainy days in the month. Sun: hours a day.

A normal year brings 93.94 in of rain on about 138 days and about 1,850 hours of sunshine.

Cyclones: how many tropical cyclones (tropical storms, hurricanes and typhoons) passed within 93 mi in each month from 1996 to 2025, according to IBTrACS (NOAA).

1991–2020 averages. Highs, lows and rainfall: TerraClimate; rainy days (0.04 in or more): NASA POWER (MERRA-2); sunshine hours: estimated from solar radiation; water: NOAA OISST; waves (average height): ERA5, 2011–2020. Normals are not a forecast: any given year can turn out very different. Sources and licenses

Temperature

Now67 °Ffeels like 66 °F

Tomorrow69 / 73 °F

It's 67 °F now (feels like 66 °F). Today, 66 °F to 72 °F; tomorrow, 69 °F to 73 °F.

Chance of rain

Today 98% 0.22 in
Fri 30 78% 0.18 in
Sat 31 88% 0.06 in
Sun 1 13%
Mon 2 81% 0.37 in
Tue 3 76% 0.17 in
Wed 4 64% 0.00 in

Today the chance of rain reaches 98%, with 0.22 in in total. The next day with likely rain is Friday 30: 78% and 0.18 in.

Recent rain: last 24 hours, 0.49 in; last 3 days, 2.21 in; last 7 days, 5.24 in.

Humidity and dew point

Humidity76%

Dew point59 °F

Humidity is 76% now and the dew point is 59 °F.

The dew point is the temperature at which the air becomes saturated: the higher it is, the heavier the air feels.

Visibility and fog

Now15 migood

Clouds24%

Visibility is good now (15 mi). No fog expected today.

The model gives visibility up to about 15 mi: beyond that, the horizon is clear.

UV index

Now2

Today's peak3moderate

Fri 30: 4 · Sat 31: 5 · Sun 1: 4

Index	Level	What to do
0–2	low	No special protection needed.
3–5	moderate	Hat, sunglasses and sunscreen around midday.
6–7	high	Sunscreen, hat and shade between 12 and 4 pm.
8–10	very high	Avoid the midday sun; reflection off the water adds to it.
11+	extreme	Avoid the sun between 11 am and 5 pm; protect yourself even if it is cloudy.

Reflection off water and sand adds radiation: protect yourself more on a boat or at the beach.

Barometric pressure

↗ Rising Anglers say fish bite less for a while
→ Steady · now Anglers expect normal activity
↘ Falling Anglers say fish feed more before the change

29.8030.0030.20 29.85

Steady now (−0.02 inHg in 3 hours). Over the next 48 hours: −0.38 inHg. Steady pressure: anglers expect normal activity. Fast changes, either way, tend to affect fishing.

Air and pollen

Air qualityFair · 35

Saharan dustNo

Previous days

The weather over the last 30 days, as the models analyzed it. Tap a day to see it hour by hour.

Day	Sky	Low / high	Rain	Max wind
Wed 28	Light rain	67 / 74 °F	0.30 in	32 mph ENE
Tue 27	Light rain	71 / 76 °F	0.61 in	34 mph N
Mon 26	Rain	71 / 74 °F	2.60 in	31 mph NE
Sun 25	Rain	73 / 78 °F	0.69 in	27 mph SW
Sat 24	Rain	73 / 77 °F	0.74 in	22 mph E
Fri 23	Light drizzle	69 / 74 °F	0.08 in	31 mph ENE
Thu 22	Light drizzle	71 / 77 °F	0.04 in	29 mph NNW

Show all 30 days

Day	Sky	Low / high	Rain	Max wind
Wed 21	Light drizzle	77 / 78 °F	0.10 in	31 mph SW
Tue 20	Light drizzle	76 / 78 °F	0.06 in	19 mph SW
Mon 19	Overcast	74 / 77 °F	0	15 mph SSW
Sun 18	Mainly clear	72 / 74 °F	0	18 mph E
Sat 17	Light drizzle	72 / 75 °F	0.02 in	25 mph NE
Fri 16	Light drizzle	73 / 74 °F	0.02 in	16 mph NNE
Thu 15	Light drizzle	72 / 75 °F	0.11 in	17 mph ENE
Wed 14	Light drizzle	75 / 77 °F	0.09 in	25 mph WSW
Tue 13	Overcast	73 / 76 °F	0	26 mph NNE
Mon 12	Mainly clear	72 / 76 °F	0	28 mph NNE
Sun 11	Mainly clear	73 / 77 °F	0	23 mph NNE
Sat 10	Light drizzle	73 / 76 °F	0.01 in	22 mph NE
Fri 9	Mainly clear	74 / 76 °F	0	22 mph ENE
Thu 8	Light drizzle	73 / 76 °F	0.05 in	22 mph ENE
Wed 7	Light drizzle	73 / 76 °F	0.01 in	23 mph E
Tue 6	Light drizzle	75 / 79 °F	0.01 in	24 mph NNE
Mon 5	Overcast	73 / 75 °F	0	31 mph NNE
Sun 4	Light drizzle	73 / 75 °F	0.01 in	29 mph ENE
Sat 3	Light drizzle	73 / 75 °F	0.08 in	33 mph NE
Fri 2	Light drizzle	74 / 78 °F	0.07 in	30 mph NE
Thu 1	Overcast	74 / 79 °F	0	31 mph N
Wed 30	Rain	72 / 75 °F	0.87 in	32 mph NE
Tue 29	Rain	72 / 78 °F	1.08 in	24 mph NE

These are the models at the start of each day (ECMWF and GFS; waves from Météo-France), not readings from a weather station: there can be differences at specific spots.

Questions about the weather in KōzushimaQuestions

What's the weather like today in Kōzushima?

Drizzle, from 66 °F to 72 °F, with a gentle breeze from the northeast (10 mph) and a 98% chance of rain.

Will it rain tomorrow in Kōzushima?

On Friday 30 the chance of rain is 78% (0.18 in): drizzle.

How warm will it be this week?

Between a low of 66 °F and a high of 73 °F; the warmest day, Friday 30.

What's the UV index today?

It reaches 3 (moderate). Hat, sunglasses and sunscreen around midday.

Is the pressure rising or falling?

It's 30.25 inHg and steady: +0.27 inHg over the last 24 hours.

When is the best time to visit Kōzushima?

The best time to visit Kōzushima is from July to August and in May: highs of 71 °F to 84 °F, about 13 rainy days a month and 6 hours of sunshine a day.

What is the weather like in Kōzushima in October?

In October, Kōzushima normally sees highs of 73 °F and lows of 64 °F, with about 14 rainy days (11.16 in for the month) and 4 hours of sunshine a day. The sea is around 75 °F. These are 1991–2020 averages.

What are the warmest and wettest months in Kōzushima?

The warmest is August, with average highs of 84 °F, and the coldest February, with lows of 44 °F. The wettest is June (12.16 in) and the driest, January.

When is typhoon season in Kōzushima?

Typhoon season: from July to October, peaking in September. In the last 30 years (1996–2025), 34 tropical cyclones passed within 93 mi of Kōzushima, one or two a year; 18 of them with hurricane-force winds (74 mph or more). The most recent: Peipah, in September 2025.

More about Kōzushima today

Weather near Kōzushima

Only places with a different forecast: spots a few miles apart share the same model cell and wouldn't add anything.

Learn more

Weather: Open-Meteo, CC BY 4.0, with the best model for each spot and lead time (NOAA HRRR and NBM in the U.S., Météo-France AROME, DWD ICON-EU, ECMWF IFS and NOAA GFS); ECMWF grid point 7.5 mi away. The comparison also uses ICON (DWD), AIFS (ECMWF) and ARPEGE (Météo-France). Outlook: ECMWF 46-day and SEAS5. Chance of rain from ensemble models (ECMWF, GEFS and NBM). UV, air quality and pollen: CAMS (Copernicus).

Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 1:22 pm (local time).

Spotted a mistake? Tell us · Where the weather and sea data come from