Weather in Niihama

14-day forecast · updated today, Thursday, October 29, at 9:57 am (GMT+9)

Now · clear sky 64 °F

Feels like: 61 °F
Low / high: 58 / 69 °F
Rain: 10%
Wind: 4 mph NE

→ 30.25 inHg · steady

Today in Niihama: overcast, 58 °F to 69 °F, with a 10% chance of rain and a light breeze from the northeast (4 mph). Tomorrow, heavy drizzle, 65 °F to 71 °F and a 92% chance of rain. The warmest day of the week is Monday 2, at 72 °F.

Temperatures for the next 14 days

69° 58°
Today
71° 65°
Fri 30
71° 64°
Sat 31
65° 58°
Sun 1
72° 63°
Mon 2
66° 62°
Tue 3
65° 62°
Wed 4
67° 62°
Thu 5
67° 60°
Fri 6
62° 58°
Sat 7
64° 59°
Sun 8
61° 57°
Mon 9
63° 56°
Tue 10
63° 55°
Wed 11

Day by day

Day	Sky	Low / high	Rain	Max wind	Max wave	High tides	Model
Today · 29	Overcast	58 / 69 °F	10%	8 mph E	0.5 ft	1:05 pm	ECMWF
Fri 30	Heavy drizzle	65 / 71 °F	92% · 0.27 in	11 mph SW	0.4 ft	12:29 am · 1:54 pm	ECMWF
Sat 31	Mainly clear	64 / 71 °F	10%	13 mph W	1.0 ft	1:10 am · 2:49 pm	ECMWF
Sun 1	Overcast	58 / 65 °F	3%	6 mph SE	0.5 ft	2:01 am · 3:56 pm	ECMWF
Mon 2	Heavy drizzle	63 / 72 °F	73% · 0.19 in	12 mph N	0.7 ft	3:17 am · 5:14 pm	ECMWF
Tue 3	Light drizzle	62 / 66 °F	35% · 0.00 in	9 mph SW	0.5 ft	5:08 am · 6:31 pm	ECMWF
Wed 4	Overcast	62 / 65 °F	11%	10 mph ENE	0.7 ft	6:50 am · 7:35 pm	ECMWF
Thu 5	Overcast	62 / 67 °F	25%	4 mph SSE	0.4 ft	8:02 am · 8:25 pm	ECMWF
Fri 6	Mainly clear	60 / 67 °F	19%	11 mph WNW	0.9 ft	8:56 am · 9:05 pm	ECMWF
Sat 7	Light drizzle	58 / 62 °F	18% · 0.05 in	10 mph NE	1.6 ft	9:41 am · 9:38 pm	ECMWF
Sun 8	Overcast	59 / 64 °F	10%	9 mph E	1.3 ft	10:22 am · 10:09 pm	ECMWF
Mon 9	Light drizzle	57 / 61 °F	18% · 0.05 in	11 mph N	1.6 ft	11:00 am · 10:37 pm	ECMWF
Tue 10	Mainly clear	56 / 63 °F	22%	12 mph WSW	1.8 ft	11:37 am · 11:04 pm	ECMWF
Wed 11	Overcast	55 / 63 °F	15%	7 mph SW	1.4 ft	12:12 pm · 11:32 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	Clear	Clear	Clear sky	Mainly clear	Overcast	Overcast	Partly cloudy
Temperature	60°	58°	58°	63°	65°	66°	68°	69°
Chance of rain	0%	0%	0%	0%	0%	0%	0%	2%
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)	7 ESE	7 SE	4 SSE	2 NNE	8 NE	3 NE	5 E	3 N
Humidity	92%	88%	87%	61%	61%	64%	65%	67%
UV	0	0	0	2	4	1	0	0
Model	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF

Do the models agree?

Medium confidence

They broadly agree, but not quite on rain tomorrow: 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	69°	71°	71°	65°	72°	66°	65°
AIFS	66°	65°	68°	66°	63°	65°	62°
GFS	67°	71°	69°	65°	70°	64°	62°
ICON	70°	71°	66°	67°	70°	64°	63°
Confidence	high	medium	high	high	medium	high	high

Do the models agree? · Rain
Rain	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	0	0.27 in	0	0	0.19 in	0.00 in	0
AIFS	0.03 in	0.66 in	0.04 in	0	0.34 in	0.02 in	0.04 in
GFS	0.00 in	0.43 in	0	0	0.24 in	0	0
ICON	0	0.48 in	0	0	0.09 in	0	0
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	813	1115	1319	611	1219	917	1016
AIFS	6	7	10	3	5	6	6
GFS	79	819	819	78	1223	1013	1215
ICON	644	648	1056	742	854	638	430
Confidence	high	high	high	high	medium	high	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)	10%	92%	10%	3%	73%	35%	11%
GFS (GEFS, 31 scenarios)	21%	87%	52%	0%	97%	10%	3%

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 0.0 °F	A bit below −32%	—
Nov 9 – Nov 15Nov 9–Nov 15	Normal −0.2 °F	Normal	—
Nov 16 – Nov 22Nov 16–Nov 22	A bit above +1.1 °F	Normal	58° / 46°
Nov 23 – Nov 29Nov 23–Nov 29	A bit above +2.2 °F	A bit above +20%	57° / 44°
Nov 30 – Dec 6Nov 30–Dec 6	A bit above +2.3 °F	A bit above +44%	55° / 42°

Coming months

When	TemperatureTemp.	Rain
November	A bit above +2.3 °F	Normal
December	A bit above +2.0 °F	A bit above +48%
January	A bit above +1.8 °F	A bit above +20%
February	Above +2.9 °F	A bit above +23%
March	A bit above +2.3 °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).

Niihama climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit Niihama is in October and in May: highs of 74 °F to 75 °F, about 9 rainy days a month and 6 hours of sunshine a day.

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

50° 34°

JanJ
52° 36°

FebF
58° 42°

MarM
67° 50°

AprA
75° 59°

MayM
80° 67°

JunJ
87° 75°

JulJ
89° 76°

AugA
83° 69°

SepS
74° 58°

OctO
64° 48°

NovN
54° 38°

DecD

Highs and lows
Monthly rainfall
Best time

Month	High	Low	Rain	Rainy daysDays	Sun (h/day)	Water	Waves	Cyclones
JanuaryJan	50°	34°	1.78 in	5	4.7	58°	1.2 ft	–
FebruaryFeb	52°	36°	2.59 in	6	5.0	55°	1.0 ft	–
MarchMar	58°	42°	4.41 in	9	5.6	56°	0.9 ft	–
AprilApr	67°	50°	5.87 in	9	6.0	59°	0.7 ft	–
MayMay	75°	59°	6.83 in	10	6.0	64°	0.5 ft	1
JuneJun	80°	67°	10.09 in	13	4.4	71°	0.4 ft	2
JulyJul	87°	75°	9.80 in	13	5.5	77°	0.5 ft	9
AugustAug	89°	76°	3.76 in	11	6.8	81°	0.5 ft	9
SeptemberSep	83°	69°	8.82 in	11	5.3	80°	0.6 ft	11
OctoberOct	74°	58°	6.97 in	8	5.1	74°	0.8 ft	3
NovemberNov	64°	48°	3.14 in	6	4.6	67°	0.8 ft	–
DecemberDec	54°	38°	2.34 in	5	4.2	62°	1.2 ft	–

Month	Water	Waves	Cyclones
Jan	58°	1.2 ft	–
Feb	55°	1.0 ft	–
Mar	56°	0.9 ft	–
Apr	59°	0.7 ft	–
May	64°	0.5 ft	1
Jun	71°	0.4 ft	2
Jul	77°	0.5 ft	9
Aug	81°	0.5 ft	9
Sep	80°	0.6 ft	11
Oct	74°	0.8 ft	3
Nov	67°	0.8 ft	–
Dec	62°	1.2 ft	–

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

A normal year brings 66.41 in of rain on about 107 days and about 1,950 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

Now64 °Ffeels like 61 °F

Tomorrow65 / 71 °F

It's 64 °F now (feels like 61 °F). Today, 58 °F to 69 °F; tomorrow, 65 °F to 71 °F.

Chance of rain

Today 10%
Fri 30 92% 0.27 in
Sat 31 10%
Sun 1 3%
Mon 2 73% 0.19 in
Tue 3 35% 0.00 in
Wed 4 11%

Today the chance of rain reaches 10%. The next day with likely rain is Friday 30: 92% and 0.27 in.

Recent rain: last 24 hours, 0.00 in; last 3 days, 1.09 in; last 7 days, 1.80 in.

Humidity and dew point

Humidity59%

Dew point49 °F

Humidity is 59% now and the dew point is 49 °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

Clouds17%

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

Now3

Today's peak4moderate

Fri 30: 2 · Sat 31: 4 · 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

30.0030.20 29.94

Steady now (+0.00 inHg in 3 hours). Over the next 48 hours: −0.12 inHg. Steady pressure: anglers expect normal activity. Fast changes, either way, tend to affect fishing.

Air and pollen

Air qualityFair · 30

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	Overcast	61 / 67 °F	0	9 mph NNW
Tue 27	Drizzle	67 / 73 °F	0.20 in	15 mph NW
Mon 26	Rain	70 / 74 °F	1.26 in	21 mph ENE
Sun 25	Light drizzle	74 / 76 °F	0.02 in	10 mph ENE
Sat 24	Light rain	69 / 75 °F	0.09 in	10 mph NE
Fri 23	Light rain	65 / 71 °F	0.22 in	13 mph ENE
Thu 22	Light drizzle	68 / 73 °F	0.04 in	15 mph NE

Show all 30 days

Day	Sky	Low / high	Rain	Max wind
Wed 21	Heavy drizzle	71 / 81 °F	0.14 in	16 mph WNW
Tue 20	Light drizzle	70 / 77 °F	0.01 in	6 mph S
Mon 19	Drizzle	71 / 76 °F	0.12 in	6 mph SSE
Sun 18	Overcast	65 / 75 °F	0	9 mph NNE
Sat 17	Overcast	65 / 75 °F	0	11 mph ENE
Fri 16	Overcast	63 / 73 °F	0	6 mph S
Thu 15	Light drizzle	65 / 69 °F	0.02 in	8 mph ENE
Wed 14	Rain	69 / 75 °F	0.41 in	12 mph WNW
Tue 13	Drizzle	67 / 76 °F	0.04 in	6 mph E
Mon 12	Overcast	69 / 77 °F	0	8 mph ESE
Sun 11	Overcast	69 / 78 °F	0	6 mph SE
Sat 10	Overcast	67 / 76 °F	0	7 mph S
Fri 9	Mainly clear	67 / 76 °F	0	5 mph ESE
Thu 8	Partly cloudy	63 / 73 °F	0	9 mph E
Wed 7	Light drizzle	67 / 73 °F	0.10 in	13 mph NNE
Tue 6	Light rain	71 / 76 °F	0.25 in	11 mph NNE
Mon 5	Heavy drizzle	69 / 75 °F	0.36 in	8 mph NE
Sun 4	Rain	68 / 71 °F	1.16 in	15 mph ENE
Sat 3	Overcast	69 / 75 °F	0	13 mph ENE
Fri 2	Heavy drizzle	71 / 78 °F	0.21 in	16 mph NE
Thu 1	Light drizzle	71 / 81 °F	0.02 in	6 mph SW
Wed 30	Partly cloudy	71 / 76 °F	0	9 mph E
Tue 29	Light rain	70 / 77 °F	0.40 in	12 mph ENE

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 NiihamaQuestions

What's the weather like today in Niihama?

Overcast, from 58 °F to 69 °F, with a light breeze from the northeast (4 mph) and a 10% chance of rain.

Will it rain tomorrow in Niihama?

On Friday 30 the chance of rain is 92% (0.27 in): heavy drizzle.

How warm will it be this week?

Between a low of 58 °F and a high of 72 °F; the warmest day, Monday 2.

What's the UV index today?

It reaches 4 (moderate). Hat, sunglasses and sunscreen around midday.

Is the pressure rising or falling?

It's 30.25 inHg and steady: +0.04 inHg over the last 24 hours.

When is the best time to visit Niihama?

The best time to visit Niihama is in October and in May: highs of 74 °F to 75 °F, about 9 rainy days a month and 6 hours of sunshine a day.

What is the weather like in Niihama in October?

In October, Niihama normally sees highs of 74 °F and lows of 58 °F, with about 8 rainy days (6.97 in for the month) and 5 hours of sunshine a day. The sea is around 74 °F. These are 1991–2020 averages.

What are the warmest and wettest months in Niihama?

The warmest is August, with average highs of 89 °F, and the coldest January, with lows of 34 °F. The wettest is June (10.09 in) and the driest, January.

When is typhoon season in Niihama?

Typhoon season: from July to September, peaking in September. In the last 30 years (1996–2025), 35 tropical cyclones passed within 93 mi of Niihama, 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 Niihama today

Weather near Niihama

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 4.2 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 9:57 am (local time).

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