Weather in Shinkoyasu

14-day forecast · updated today, Thursday, October 29, at 10:17 am (GMT+9)

Now · overcast 54 °F

Feels like: 50 °F
Low / high: 47 / 60 °F
Rain: 12%
Wind: 4 mph NNW

→ 30.35 inHg · steady

Today in Shinkoyasu: overcast, 47 °F to 60 °F, with a 12% chance of rain and a light breeze from the north-northwest (4 mph). Tomorrow, light drizzle, 52 °F to 68 °F and a 29% chance of rain. The warmest day of the week is Saturday 31, at 71 °F. Next likely rain: Monday 2 (55%).

Measured now at the airport

Tokyo/Haneda (RJTT), 8.3 mi away · 17 min ago

Visibility6.2 mi or more

WeatherNothing to note

Temperature57 °F

Wind10 mph from the north

It's what the airport's weather station measured, not a forecast: on the coast, wind and fog can be different. Airports report every 30 or 60 minutes.

Airport METAR report, via NOAA's Aviation Weather Center (aviationweather.gov). Sources and licenses

Temperatures for the next 14 days

60° 47°
Today
68° 52°
Fri 30
71° 54°
Sat 31
63° 52°
Sun 1
65° 53°
Mon 2
70° 53°
Tue 3
60° 54°
Wed 4
61° 54°
Thu 5
67° 52°
Fri 6
59° 53°
Sat 7
54° 49°
Sun 8
56° 48°
Mon 9
60° 49°
Tue 10
59° 48°
Wed 11

Day by day

Day	Sky	Low / high	Rain	Max wind	Max wave	High tides	Model
Today · 29	Overcast	47 / 60 °F	12%	6 mph N	1.2 ft	7:17 am · 5:53 pm	ECMWF
Fri 30	Light drizzle	52 / 68 °F	29% · 0.01 in	5 mph N	1.7 ft	8:10 am · 6:24 pm	ECMWF
Sat 31	Light drizzle	54 / 71 °F	27% · 0.02 in	9 mph NNW	2.0 ft	9:10 am · 7:00 pm	ECMWF
Sun 1	Overcast	52 / 63 °F	2%	6 mph NNE	1.4 ft	10:26 am · 7:53 pm	ECMWF
Mon 2	Heavy drizzle	53 / 65 °F	55% · 0.22 in	9 mph W	2.6 ft	12:03 pm · 9:53 pm	ECMWF
Tue 3	Overcast	53 / 70 °F	22%	6 mph N	2.4 ft	1:19 pm	ECMWF
Wed 4	Light rain	54 / 60 °F	37% · 0.25 in	9 mph N	2.0 ft	12:25 am · 2:01 pm	ECMWF
Thu 5	Light rain	54 / 61 °F	61% · 0.36 in	9 mph N	2.2 ft	1:58 am · 2:31 pm	ECMWF
Fri 6	Mainly clear	52 / 67 °F	47%	10 mph N	1.8 ft	3:01 am · 2:57 pm	ECMWF
Sat 7	Overcast	53 / 59 °F	10%	9 mph NE	2.2 ft	3:51 am · 3:21 pm	ECMWF
Sun 8	Overcast	49 / 54 °F	10%	6 mph NNW	1.7 ft	4:35 am · 3:45 pm	ECMWF
Mon 9	Overcast	48 / 56 °F	18%	10 mph NNE	1.7 ft	5:15 am · 4:09 pm	ECMWF
Tue 10	Partly cloudy	49 / 60 °F	18%	6 mph NNE	1.2 ft	5:53 am · 4:33 pm	ECMWF
Wed 11	Mainly clear	48 / 59 °F	16%	6 mph NNW	1.1 ft	6:30 am · 4:59 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	Overcast	Mainly clear	Overcast	Overcast	Overcast	Partly cloudy	Mainly clear	Partly cloudy
Temperature	52°	50°	47°	52°	56°	60°	56°	54°
Chance of rain	4%	0%	0%	0%	0%	12%	6%	6%
Rain	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in
Wind (mph)	6 NNE	6 NNE	5 N	4 NNW	4 NNW	2 NNE	5 N	3 N
Humidity	63%	66%	72%	66%	65%	68%	80%	84%
UV	0	0	0	1	1	0	0	0
Model	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF

Do the models agree?

Medium confidence

They broadly agree, but not quite on wind today: take it with some caution.

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	60°	68°	71°	63°	65°	70°	60°
AIFS	62°	64°	70°	66°	62°	67°	57°
GFS	64°	69°	73°	68°	74°	69°	63°
ICON	61°	68°	75°	66°	74°	71°	61°
Confidence	high	high	high	high	low	high	medium

Do the models agree? · Rain
Rain	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	0	0.01 in	0.02 in	0	0.22 in	0	0.25 in
AIFS	0	0.09 in	0.06 in	0	0.17 in	0.03 in	0.49 in
GFS	0	0	0.02 in	0.02 in	0.11 in	0.00 in	0.07 in
ICON	0	0	0	0	0	0	0.09 in
Confidence	high	medium	medium	high	medium	high	medium

Do the models agree? · Wind
Wind (mph)	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	613	515	918	617	938	632	920
AIFS	6	4	5	6	6	6	13
GFS	1313	99	1619	1519	2837	1619	1517
ICON	515	310	925	516	1642	617	615
Confidence	medium	high	medium	medium	low	medium	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)	12%	29%	27%	2%	55%	22%	37%
GFS (GEFS, 31 scenarios)	4%	20%	29%	39%	58%	44%	39%

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.

The next few weeks look normal for the time of year.

Next 6 weeks

When	TemperatureTemp.	Rain	Typical high / low
Nov 2 – Nov 8Nov 2–Nov 8	Normal −0.7 °F	A bit above +24%	—
Nov 9 – Nov 15Nov 9–Nov 15	Normal −0.7 °F	Normal	—
Nov 16 – Nov 22Nov 16–Nov 22	A bit above +1.3 °F	Normal	59° / 49°
Nov 23 – Nov 29Nov 23–Nov 29	A bit above +1.8 °F	Normal	57° / 47°
Nov 30 – Dec 6Nov 30–Dec 6	A bit above +2.2 °F	A bit above +22%	55° / 45°

Coming months

When	TemperatureTemp.	Rain
November	Above +3.6 °F	A bit above +23%
December	Above +2.9 °F	Above +59%
January	Above +3.1 °F	Normal
February	Above +3.8 °F	A bit above +26%
March	Above +3.6 °F	Normal

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. The long-range sea temperature isn't usable at this spot (the model's grid cell falls on land).

Shinkoyasu climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit Shinkoyasu is in May: highs of 74 °F, about 10 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), 35 tropical cyclones passed within 93 mi of Shinkoyasu, one or two a year; 14 of them with hurricane-force winds (74 mph or more). The most recent: Peipah, in September 2025.

50° 35°

JanJ
52° 36°

FebF
57° 42°

MarM
67° 50°

AprA
74° 59°

MayM
79° 66°

JunJ
85° 73°

JulJ
88° 75°

AugA
82° 69°

SepS
72° 58°

OctO
63° 48°

NovN
55° 38°

DecD

Highs and lows
Monthly rainfall
Best time

Month	High	Low	Rain	Rainy daysDays	Sun (h/day)	Water	Waves	Cyclones
JanuaryJan	50°	35°	2.23 in	5	5.7	57°	3.5 ft	–
FebruaryFeb	52°	36°	2.47 in	5	5.3	55°	3.7 ft	–
MarchMar	57°	42°	4.52 in	9	5.3	56°	3.9 ft	–
AprilApr	67°	50°	4.90 in	9	5.6	59°	3.7 ft	–
MayMay	74°	59°	5.76 in	10	5.6	64°	3.2 ft	–
JuneJun	79°	66°	7.33 in	13	3.8	70°	3.1 ft	4
JulyJul	85°	73°	6.44 in	14	4.5	74°	3.3 ft	7
AugustAug	88°	75°	5.85 in	12	5.6	79°	3.6 ft	7
SeptemberSep	82°	69°	7.90 in	13	4.3	76°	3.7 ft	10
OctoberOct	72°	58°	8.93 in	10	3.9	71°	4.0 ft	7
NovemberNov	63°	48°	3.69 in	7	4.1	66°	3.4 ft	–
DecemberDec	55°	38°	2.43 in	5	4.7	61°	3.6 ft	–

Month	Water	Waves	Cyclones
Jan	57°	3.5 ft	–
Feb	55°	3.7 ft	–
Mar	56°	3.9 ft	–
Apr	59°	3.7 ft	–
May	64°	3.2 ft	–
Jun	70°	3.1 ft	4
Jul	74°	3.3 ft	7
Aug	79°	3.6 ft	7
Sep	76°	3.7 ft	10
Oct	71°	4.0 ft	7
Nov	66°	3.4 ft	–
Dec	61°	3.6 ft	–

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

A normal year brings 62.46 in of rain on about 110 days and about 1,800 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

Now54 °Ffeels like 50 °F

Tomorrow52 / 68 °F

It's 54 °F now (feels like 50 °F). Today, 47 °F to 60 °F; tomorrow, 52 °F to 68 °F.

Chance of rain

Today 12%
Fri 30 29% 0.01 in
Sat 31 27% 0.02 in
Sun 1 2%
Mon 2 55% 0.22 in
Tue 3 22%
Wed 4 37% 0.25 in

Today the chance of rain reaches 12%. The next day with likely rain is Monday 2: 55% and 0.22 in.

Recent rain: last 24 hours, 0.01 in; last 3 days, 1.14 in; last 7 days, 2.47 in.

Humidity and dew point

Humidity65%

Dew point42 °F

Humidity is 65% now and the dew point is 42 °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

Clouds99%

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

Now1

Today's peak2low

Fri 30: 3 · Sat 31: 4 · Sun 1: 3

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

29.8030.0030.2030.40 29.80

Steady now (0.00 inHg in 3 hours). Over the next 48 hours: −0.48 inHg. Steady pressure: anglers expect normal activity. Fast changes, either way, tend to affect fishing.

Air and pollen

Air qualityModerate · 57

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 drizzle	52 / 67 °F	0.01 in	10 mph N
Tue 27	Drizzle	62 / 71 °F	0.05 in	9 mph N
Mon 26	Rain	63 / 68 °F	1.53 in	9 mph N
Sun 25	Light rain	62 / 79 °F	0.43 in	13 mph SW
Sat 24	Light rain	60 / 67 °F	0.45 in	6 mph N
Fri 23	Overcast	57 / 71 °F	0	6 mph NNE
Thu 22	Partly cloudy	63 / 76 °F	0	11 mph N

Show all 30 days

Day	Sky	Low / high	Rain	Max wind
Wed 21	Overcast	68 / 84 °F	0	17 mph SSW
Tue 20	Light drizzle	68 / 81 °F	0.05 in	9 mph WSW
Mon 19	Overcast	66 / 80 °F	0	12 mph SSW
Sun 18	Mainly clear	58 / 76 °F	0	8 mph SSW
Sat 17	Partly cloudy	66 / 81 °F	0	8 mph NNE
Fri 16	Overcast	63 / 82 °F	0	6 mph NNW
Thu 15	Overcast	64 / 75 °F	0	10 mph ENE
Wed 14	Light drizzle	66 / 82 °F	0.01 in	11 mph WNW
Tue 13	Light drizzle	64 / 79 °F	0.01 in	7 mph NNE
Mon 12	Partly cloudy	65 / 81 °F	0	8 mph N
Sun 11	Clear sky	62 / 84 °F	0	6 mph NNE
Sat 10	Clear sky	61 / 79 °F	0	6 mph N
Fri 9	Clear sky	60 / 77 °F	0	7 mph NE
Thu 8	Mainly clear	58 / 76 °F	0	6 mph NE
Wed 7	Light drizzle	64 / 78 °F	0.07 in	8 mph N
Tue 6	Overcast	67 / 82 °F	0	9 mph N
Mon 5	Light drizzle	63 / 70 °F	0.01 in	8 mph NNW
Sun 4	Overcast	60 / 72 °F	0	7 mph N
Sat 3	Overcast	64 / 74 °F	0	6 mph NE
Fri 2	Light drizzle	66 / 73 °F	0.11 in	7 mph NNE
Thu 1	Light drizzle	66 / 85 °F	0.04 in	8 mph N
Wed 30	Heavy drizzle	64 / 70 °F	0.42 in	7 mph N
Tue 29	Rain	65 / 72 °F	1.52 in	4 mph E

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 ShinkoyasuQuestions

What's the weather like today in Shinkoyasu?

Overcast, from 47 °F to 60 °F, with a light breeze from the north-northwest (4 mph) and a 12% chance of rain.

Will it rain tomorrow in Shinkoyasu?

On Friday 30 the chance of rain is 29% (0.01 in): light drizzle.

How warm will it be this week?

Between a low of 47 °F and a high of 71 °F; the warmest day, Saturday 31.

What's the UV index today?

It reaches 2 (low). No special protection needed.

Is the pressure rising or falling?

It's 30.35 inHg and steady: +0.38 inHg over the last 24 hours.

When is the best time to visit Shinkoyasu?

The best time to visit Shinkoyasu is in May: highs of 74 °F, about 10 rainy days a month and 6 hours of sunshine a day.

What is the weather like in Shinkoyasu in October?

In October, Shinkoyasu normally sees highs of 72 °F and lows of 58 °F, with about 10 rainy days (8.93 in for the month) and 4 hours of sunshine a day. The sea is around 71 °F. These are 1991–2020 averages.

What are the warmest and wettest months in Shinkoyasu?

The warmest is August, with average highs of 88 °F, and the coldest January, with lows of 35 °F. The wettest is October (8.93 in) and the driest, January.

When is typhoon season in Shinkoyasu?

Typhoon season: from July to October, peaking in September. In the last 30 years (1996–2025), 35 tropical cyclones passed within 93 mi of Shinkoyasu, one or two a year; 14 of them with hurricane-force winds (74 mph or more). The most recent: Peipah, in September 2025.

More about Shinkoyasu today

Weather near Shinkoyasu

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 8.7 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 10:17 am (local time).

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