Iwai weather in February

In February, Iwai sees average daytime highs of 10°C and overnight lows near 1°C, with 58 mm of precipitation across 7.2 wet days and about 10.6 hours of daylight. It is the 11th-warmest and 11th-wettest month of the year here.

Highs climb over the month, from about 9°C in the first days to 11°C by the end. The sky is clear or mostly clear about 49% of the time in February, and the air most often feels dry.

Daylight stretches from about 10 h 12 min at the start of February to 11 h 06 min by month's end. Set against the rest of the year, February is Iwai's 3rd-clearest and 4th-windiest month. For the whole year in context, see Iwai's year-round climate.

Daytime high: 10°; 11th warmest
Overnight low: 1°; 2nd coldest
Precipitation: 58 mm; 7.2 wet days
Daylight: 10 h 36 min; 6:36 AM – 5:14 PM
Cloud cover: 47%; 3rd clearest
Wind: 11 km/h; 4th windiest
Solar energy: 3.5 kWh/m²
Travel score: 2.3; out of 10

← January Iwai year-round climate March →Best places to visit in February

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in February

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 9°C in the first days to 11°C by the end.

A typical February day in Iwai reaches about 10°C in the afternoon and slips back to 1°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 6°C and 14°C. Set against its neighbours, February runs about 1°C warmer than January and about 4°C cooler than March.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28
Avg high (°C)	9	9	9	9	9	9	9	9	9	9	9	10	10	10	10	10	10	10	10	10	10	10	10	11	11	11	11	11
Avg low (°C)	0	0	0	0	0	0	1	1	1	1	1	1	1	1	1	1	1	1	1	2	2	2	2	2	2	2	2	2

	Avg high (°C)	Avg low (°C)
1	9	0
2	9	0
3	9	0
4	9	0
5	9	0
6	9	0
7	9	1
8	9	1
9	9	1
10	9	1
11	9	1
12	10	1
13	10	1
14	10	1
15	10	1
16	10	1
17	10	1
18	10	1
19	10	1
20	10	2
21	10	2
22	10	2
23	10	2
24	11	2
25	11	2
26	11	2
27	11	2
28	11	2

How February really feels in Iwai

Once humidity and wind are folded in, February averages 0 days that feel above 32°C and 28 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

The story in February is cold — wind chill drags the overnight "feels like" below the raw low.

Iwai weather by month

How February compares with the rest of the year at a glance. February is the 11th-warmest and 11th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	9° / 0°	60	6.5	1.2	9.8	2.0
Feb	10° / 1°	58	7.2	1.7	10.6	2.3
Mar	13° / 4°	106	11.6	0.9	11.7	3.7
Apr	18° / 10°	106	11.3	0.1	12.9	5.6
May	23° / 15°	131	12.4	0	13.9	6.3
Jun	26° / 19°	154	14.9	0	14.4	5.5
Jul	29° / 23°	163	15.4	0	14.2	4.5
Aug	31° / 24°	123	13.6	0	13.4	4.2
Sep	27° / 20°	167	13.9	0	12.2	5.5
Oct	21° / 14°	186	12.5	0	11.1	6.2
Nov	16° / 8°	85	9.1	0	10.1	5.3
Dec	11° / 3°	56	6.8	0.1	9.6	3.2

Cloud cover in February

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 49% of the time in February.

Beyond those clear spells, partly cloudy skies cover about 13% of February, with mostly cloudy or overcast conditions the remaining 38%. Skies tend to cloud over as the month goes on.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28
Clearer (%)	70	70	69	68	67	67	66	65	64	63	63	63	63	62	62	60	60	60	59	59	58	58	57	57	56	56	55	54
Cloudier (%)	30	30	31	32	33	33	34	35	36	37	37	37	37	38	38	40	40	40	41	41	42	42	43	43	44	44	45	46

	Clearer (%)	Cloudier (%)
1	70	30
2	70	30
3	69	31
4	68	32
5	67	33
6	67	33
7	66	34
8	65	35
9	64	36
10	63	37
11	63	37
12	63	37
13	63	37
14	62	38
15	62	38
16	60	40
17	60	40
18	60	40
19	59	41
20	59	41
21	58	42
22	58	42
23	57	43
24	57	43
25	56	44
26	56	44
27	55	45
28	54	46

Chance of precipitation in February

Any precipitationSnow

Iwai gets around 58 mm of rain and snow over 7.2 wet days in February. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 27% and peaks near 34% on the wettest days, and about 2 days bring snow. The odds climb toward the end of the month.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28
Rain chance (%)	21	21	21	22	22	22	23	23	24	25	25	26	26	27	27	27	28	28	29	29	30	30	31	32	32	33	34	34
Snow chance (%)	6	6	6	6	7	7	7	7	7	7	7	7	7	7	7	7	7	6	6	6	6	5	5	5	5	5	5	5

	Rain chance (%)	Snow chance (%)
1	21	6
2	21	6
3	21	6
4	22	6
5	22	7
6	22	7
7	23	7
8	23	7
9	24	7
10	25	7
11	25	7
12	26	7
13	26	7
14	27	7
15	27	7
16	27	7
17	28	7
18	28	6
19	29	6
20	29	6
21	30	6
22	30	5
23	31	5
24	32	5
25	32	5
26	33	5
27	34	5
28	34	5

Humidity in February

DryComfortableHumidMuggyOppressiveMiserable

Most of February feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, February lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28
Dry (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100

Wind in February

Winds average 11 km/h in February.

Across February, daily wind ranges from about 11 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28
Wind speed (km/h)	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	11	calm
2	11	calm
3	11	calm
4	11	calm
5	11	calm
6	11	calm
7	11	calm
8	11	calm
9	11	calm
10	11	calm
11	11	calm
12	11	calm
13	11	calm
14	11	calm
15	11	calm
16	11	calm
17	11	calm
18	11	calm
19	11	calm
20	11	calm
21	11	calm
22	11	calm
23	11	calm
24	11	calm
25	11	calm
26	11	calm
27	11	calm
28	11	calm

Sunrise & sunset in February

DaylightNight

Daylight runs from about 10 h 12 min at the start of February to 11 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 54 minutes over February. Sunrise moves from 6:48 AM to 6:21 AM, and sunset from 5:00 PM to 5:27 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28
Daylight (h)	10.2	10.2	10.3	10.3	10.3	10.3	10.4	10.4	10.4	10.5	10.5	10.5	10.6	10.6	10.6	10.7	10.7	10.7	10.8	10.8	10.8	10.9	10.9	11.0	11.0	11.0	11.1	11.1
Sunrise (AM)	6:48	6:47	6:47	6:46	6:45	6:44	6:43	6:43	6:42	6:41	6:40	6:39	6:38	6:37	6:36	6:35	6:34	6:33	6:32	6:30	6:29	6:28	6:27	6:26	6:24	6:23	6:22	6:21
Sunset (PM)	5:00	5:01	5:02	5:03	5:04	5:05	5:06	5:07	5:08	5:09	5:10	5:11	5:12	5:13	5:14	5:15	5:16	5:17	5:18	5:19	5:20	5:21	5:22	5:23	5:24	5:25	5:26	5:27

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	10.2	6:48	5:00
2	10.2	6:47	5:01
3	10.3	6:47	5:02
4	10.3	6:46	5:03
5	10.3	6:45	5:04
6	10.3	6:44	5:05
7	10.4	6:43	5:06
8	10.4	6:43	5:07
9	10.4	6:42	5:08
10	10.5	6:41	5:09
11	10.5	6:40	5:10
12	10.5	6:39	5:11
13	10.6	6:38	5:12
14	10.6	6:37	5:13
15	10.6	6:36	5:14
16	10.7	6:35	5:15
17	10.7	6:34	5:16
18	10.7	6:33	5:17
19	10.8	6:32	5:18
20	10.8	6:30	5:19
21	10.8	6:29	5:20
22	10.9	6:28	5:21
23	10.9	6:27	5:22
24	11.0	6:26	5:23
25	11.0	6:24	5:24
26	11.0	6:23	5:25
27	11.1	6:22	5:26
28	11.1	6:21	5:27

Solar energy in February

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in February, about 3.5 kWh/m².

For context, solar energy here swings from a low near 2.36 kWh/m² to a high of 5.12 kWh/m² in May across the year — February's 3.5 kWh/m² falls in the middle.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28
Solar energy (kWh/m²)	3.2	3.2	3.3	3.3	3.3	3.3	3.3	3.4	3.4	3.4	3.4	3.5	3.5	3.5	3.5	3.5	3.5	3.5	3.6	3.6	3.6	3.6	3.6	3.6	3.7	3.7	3.7	3.7
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	Solar energy (kWh/m²)	Level
1	3.2	Moderate
2	3.2	Moderate
3	3.3	Moderate
4	3.3	Moderate
5	3.3	Moderate
6	3.3	Moderate
7	3.3	Moderate
8	3.4	Moderate
9	3.4	Moderate
10	3.4	Moderate
11	3.4	Moderate
12	3.5	Moderate
13	3.5	Moderate
14	3.5	Moderate
15	3.5	Moderate
16	3.5	Moderate
17	3.5	Moderate
18	3.5	Moderate
19	3.6	Moderate
20	3.6	Moderate
21	3.6	Moderate
22	3.6	Moderate
23	3.6	Moderate
24	3.6	Moderate
25	3.7	Moderate
26	3.7	Moderate
27	3.7	Moderate
28	3.7	Moderate

Planning a trip in February

Hazard calendar for Iwai

In seasonPeak

In February, Iwai sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.

Iwai sits in the Pacific typhoon belt; the season peaks July–October.

Pacific typhoon

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is February a good time to visit Iwai?

Our two travel scores rate February for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

2.3

Sightseeing

11th-best month of the year

0.0

Beach & pool

11th-best month of the year

February is a weaker month for outdoor sightseeing in Iwai.

What to pack for Iwai in February

From February's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In February, Iwai sees daytime highs around 10°C and nights near 1°C. Pack a warm layer. About 7 days see rain.

a warm layer

Sea temperature near Iwai in February

The nearest coast averages about 13°C in February — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 47 km away) is warmest in August at about 26°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 7 to Nov 3 — about 4.9 months when the water holds above 20°C.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sea temperature (°C)	14	13	13	15	18	21	23	26	25	22	19	16
Comfort	Bracing	Bracing	Bracing	Cool	Cool	Refreshing	Refreshing	Warm	Warm	Refreshing	Cool	Cool

	Sea temperature (°C)	Comfort
Jan	14	Bracing
Feb	13	Bracing
Mar	13	Bracing
Apr	15	Cool
May	18	Cool
Jun	21	Refreshing
Jul	23	Refreshing
Aug	26	Warm
Sep	25	Warm
Oct	22	Refreshing
Nov	19	Cool
Dec	16	Cool

UV index in Iwai in February

LowModerateHighVery highExtreme

Clear-sky midday UV in February peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Iwai peaks around July 21 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	2	4	4	6	8	9	10	10	9	6	3	2
Level	Moderate	Moderate	Moderate	High	Very high	Very high	Very high	Very high	Very high	High	Moderate	Moderate

	UV index (midday)	Level
Jan	2	Moderate
Feb	4	Moderate
Mar	4	Moderate
Apr	6	High
May	8	Very high
Jun	9	Very high
Jul	10	Very high
Aug	10	Very high
Sep	9	Very high
Oct	6	High
Nov	3	Moderate
Dec	2	Moderate

Air quality in Iwai in February

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where February falls, not just the annual average.

Air quality in Iwai is worst in March — around 25 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (December, 14 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	15	18	25	25	24	19	16	15	15	16	16	14
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	PM2.5 (µg/m³)	Level
Jan	15	Moderate
Feb	18	Moderate
Mar	25	Moderate
Apr	25	Moderate
May	24	Moderate
Jun	19	Moderate
Jul	16	Moderate
Aug	15	Moderate
Sep	15	Moderate
Oct	16	Moderate
Nov	16	Moderate
Dec	14	Moderate

Location & terrain

Where is Iwai?

Iwai sits at 36.0°N, 139.9°E, 5 m above sea level, in Japan. The nearest listed city is Bandō, 4.0 km away.

Topography around Iwai

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Iwai.

Within 3 km, the terrain around Iwai has only modest variations in elevation — a maximum elevation change of 32 m around an average of 17 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 48 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,630 m.

The land around Iwai is covered by artificial surfaces (34%), trees (30%) and cropland (26%) within 3 km, cropland (43%) and artificial surfaces (31%) within 16 km, and trees (36%), artificial surfaces (29%) and cropland (22%) within 80 km.

3 km

32 m

artificial surfaces 34%

16 km

48 m

cropland 43%

80 km

1,630 m

trees 36%

treesgrasslandcroplandartificial surfacesbare terrainwater

← January Iwai year-round climate March →Best places to visit in February

February weather nearby: Bandō 4.0 km · Jōsō 6.0 km · Mitsukaidō 8.0 km · Ishige 10 km · Sakai 11 km · Noda 12 km · Tsukubamirai 12 km · Yachiyo 15 km

Japan travel facts

Travel advisory: Level 1; Exercise Normal Precautions
Power plugs: Type A / B; 100 V · 50 / 60 Hz
Prices: ≈ 65% of US; price level, 2025
GDP per capita: $35,951; 2025
Happiness: 6.1 / 10; World Happiness, 2025
Safe drinking water: 99%; of population, 2024
Homicide rate: 0.2; per 100k, 2023
Road deaths: 3.6; per 100k/yr, 2019
Income group: High; World Bank
English: Very low; EF EPI 446
Religion

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Iwai (36.05°, 139.9°, elevation 5 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).

	Avg high (°C)	Avg low (°C)
1	9	0
2	9	0
3	9	0
4	9	0
5	9	0
6	9	0
7	9	1
8	9	1
9	9	1
10	9	1
11	9	1
12	10	1
13	10	1
14	10	1
15	10	1
16	10	1
17	10	1
18	10	1
19	10	1
20	10	2
21	10	2
22	10	2
23	10	2
24	11	2
25	11	2
26	11	2
27	11	2
28	11	2

	Clearer (%)	Cloudier (%)
1	70	30
2	70	30
3	69	31
4	68	32
5	67	33
6	67	33
7	66	34
8	65	35
9	64	36
10	63	37
11	63	37
12	63	37
13	63	37
14	62	38
15	62	38
16	60	40
17	60	40
18	60	40
19	59	41
20	59	41
21	58	42
22	58	42
23	57	43
24	57	43
25	56	44
26	56	44
27	55	45
28	54	46

	Rain chance (%)	Snow chance (%)
1	21	6
2	21	6
3	21	6
4	22	6
5	22	7
6	22	7
7	23	7
8	23	7
9	24	7
10	25	7
11	25	7
12	26	7
13	26	7
14	27	7
15	27	7
16	27	7
17	28	7
18	28	6
19	29	6
20	29	6
21	30	6
22	30	5
23	31	5
24	32	5
25	32	5
26	33	5
27	34	5
28	34	5

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100

	Avg high (°C)	Avg low (°C)
1	9	0
2	9	0
3	9	0
4	9	0
5	9	0
6	9	0
7	9	1
8	9	1
9	9	1
10	9	1
11	9	1
12	10	1
13	10	1
14	10	1
15	10	1
16	10	1
17	10	1
18	10	1
19	10	1
20	10	2
21	10	2
22	10	2
23	10	2
24	11	2
25	11	2
26	11	2
27	11	2
28	11	2

	Clearer (%)	Cloudier (%)
1	70	30
2	70	30
3	69	31
4	68	32
5	67	33
6	67	33
7	66	34
8	65	35
9	64	36
10	63	37
11	63	37
12	63	37
13	63	37
14	62	38
15	62	38
16	60	40
17	60	40
18	60	40
19	59	41
20	59	41
21	58	42
22	58	42
23	57	43
24	57	43
25	56	44
26	56	44
27	55	45
28	54	46

	Rain chance (%)	Snow chance (%)
1	21	6
2	21	6
3	21	6
4	22	6
5	22	7
6	22	7
7	23	7
8	23	7
9	24	7
10	25	7
11	25	7
12	26	7
13	26	7
14	27	7
15	27	7
16	27	7
17	28	7
18	28	6
19	29	6
20	29	6
21	30	6
22	30	5
23	31	5
24	32	5
25	32	5
26	33	5
27	34	5
28	34	5

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100

	Avg high (°C)	Avg low (°C)
1	9	0
2	9	0
3	9	0
4	9	0
5	9	0
6	9	0
7	9	1
8	9	1
9	9	1
10	9	1
11	9	1
12	10	1
13	10	1
14	10	1
15	10	1
16	10	1
17	10	1
18	10	1
19	10	1
20	10	2
21	10	2
22	10	2
23	10	2
24	11	2
25	11	2
26	11	2
27	11	2
28	11	2

	Clearer (%)	Cloudier (%)
1	70	30
2	70	30
3	69	31
4	68	32
5	67	33
6	67	33
7	66	34
8	65	35
9	64	36
10	63	37
11	63	37
12	63	37
13	63	37
14	62	38
15	62	38
16	60	40
17	60	40
18	60	40
19	59	41
20	59	41
21	58	42
22	58	42
23	57	43
24	57	43
25	56	44
26	56	44
27	55	45
28	54	46

	Rain chance (%)	Snow chance (%)
1	21	6
2	21	6
3	21	6
4	22	6
5	22	7
6	22	7
7	23	7
8	23	7
9	24	7
10	25	7
11	25	7
12	26	7
13	26	7
14	27	7
15	27	7
16	27	7
17	28	7
18	28	6
19	29	6
20	29	6
21	30	6
22	30	5
23	31	5
24	32	5
25	32	5
26	33	5
27	34	5
28	34	5

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100