Ōmachi weather in February

In February, Ōmachi sees average daytime highs of -3°C and overnight lows near -10°C, with 167 mm of precipitation across 18.3 wet days and about 10.6 hours of daylight. It is the 11th-warmest and 12th-wettest month of the year here.

Highs climb over the month, from about -5°C in the first days to -2°C by the end. The sky is clear or mostly clear about 12% 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 Ōmachi's 7th-clearest and 1st-windiest month. For the whole year in context, see Ōmachi's year-round climate.

Daytime high
-3°
11th warmest
Overnight low
-10°
2nd coldest
Precipitation
167 mm
18.3 wet days
Daylight
10 h 36 min
6:45 AM – 5:22 PM
Cloud cover
73%
7th clearest
Wind
7 km/h
1st windiest
Solar energy
3.59 kWh/m²
Travel score
0.0
out of 10

Ōmachi is dissolved municipality in Kitaazumi district, Nagano prefecture, Japan.

Founded
1889

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in February

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about -5°C in the first days to -2°C by the end.

A typical February day in Ōmachi reaches about -3°C in the afternoon and slips back to -10°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between -8°C and 2°C. Set against its neighbours, February runs about 1°C warmer than January and about 4°C cooler than March.

-15°-10°-5°151015202528
Avg high (°C)Avg low (°C)
1-5-11
2-5-11
3-5-11
4-4-11
5-4-11
6-4-11
7-4-11
8-4-11
9-4-11
10-4-11
11-4-10
12-4-10
13-4-10
14-4-10
15-3-10
16-3-10
17-3-10
18-3-10
19-3-10
20-3-10
21-3-9
22-2-9
23-2-9
24-2-9
25-2-9
26-2-9
27-2-9
28-1-8

How February really feels in Ōmachi

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
0
heat index over the day's high
Days feeling ≤ C
28
28 feel bitter (≤ -10°C)

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

Ōmachi weather by month

How February compares with the rest of the year at a glance. February is the 11th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-5° / -11°19322.4249.80.0
Feb-3° / -10°16718.319.610.60.0
Mar / -6°2111919.111.70.0
Apr / -1°20016.69.912.90.9
May14° / 23717.81.313.93.5
Jun18° / 11°34420.6014.44.1
Jul22° / 15°45124.4014.24.3
Aug23° / 16°29721.9013.44.9
Sep19° / 12°29219.1012.24.6
Oct13° / 22716.31.111.13.2
Nov / -2°18317.311.110.10.6
Dec-2° / -8°19621.421.49.60.0

Cloud cover in February

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 12% of the time in February.

Beyond those clear spells, partly cloudy skies cover about 11% of February, with mostly cloudy or overcast conditions the remaining 77%.

0%25%50%75%100%151015202528
Clearer (%)Cloudier (%)
12179
22179
32080
42080
52080
62080
72080
82080
92080
102080
112080
122179
132179
142179
152278
162278
172377
182476
192476
202575
212674
222674
232773
242773
252773
262872
272971
282971

Chance of precipitation in February

Any precipitationSnow

Ōmachi gets around 167 mm of rain and snow over 18.3 wet days in February, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 66% and peaks near 72% on the wettest days, and about 20 days bring snow. The odds ease toward the end of the month.

0%20%40%60%80%151015202528
Rain chance (%)Snow chance (%)
17277
27277
37177
47176
57176
67176
77175
87075
97075
107074
116974
126973
136873
146872
156771
166670
176569
186569
196468
206367
216266
226266
236165
246065
256064
266064
276064
286064

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.

0%25%50%75%100%151015202528
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100

Wind in February

Winds average 7 km/h in February, the windiest month of the year.

Across February, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202528
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm

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 6:57 AM to 6:29 AM, and sunset from 5:07 PM to 5:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202528
Daylight (h)Sunrise (AM)Sunset (PM)
110.26:575:07
210.26:565:08
310.26:565:09
410.36:555:10
510.36:545:11
610.36:535:12
710.36:525:13
810.46:525:14
910.46:515:15
1010.46:505:16
1110.56:495:17
1210.56:485:18
1310.56:475:20
1410.66:465:21
1510.66:455:22
1610.66:445:23
1710.76:435:24
1810.76:415:25
1910.86:405:26
2010.86:395:27
2110.86:385:28
2210.96:375:29
2310.96:365:30
2410.96:345:31
2511.06:335:32
2611.06:325:33
2711.16:315:34
2811.16:295:35

Solar energy in February

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in February, about 3.59 kWh/m².

For context, solar energy here swings from a low near 2.39 kWh/m² to a high of 5.74 kWh/m² in May across the year — February's 3.59 kWh/m² falls in the middle.

012345151015202528
Solar energy (kWh/m²)Level
13.1Moderate
23.1Moderate
33.2Moderate
43.2Moderate
53.2Moderate
63.3Moderate
73.3Moderate
83.3Moderate
93.4Moderate
103.4Moderate
113.5Moderate
123.5Moderate
133.5Moderate
143.6Moderate
153.6Moderate
163.6Moderate
173.7Moderate
183.7Moderate
193.8Moderate
203.8Moderate
213.8Moderate
223.9Moderate
233.9Moderate
244.0Moderate
254.0Moderate
264.0Bright
274.1Bright
284.1Bright
Planning a trip in February

Hazard calendar for Ōmachi

In seasonPeak

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

Ōmachi 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 Ōmachi?

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

0.0
Sightseeing
9th-best month of the year
0.0
Beach & pool
7th-best month of the year

February is a weaker month for outdoor sightseeing in Ōmachi.

What to pack for Ōmachi in February

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

In February, Ōmachi sees daytime highs around -3°C and nights near -10°C. Pack a warm layer, a heavy coat and rain gear. About 18 days see rain.

a warm layera heavy coatrain gear

Sea temperature near Ōmachi in February

The nearest coast averages about 11°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 61 km away) is warmest in August at about 27°C and coldest in March near 10°C.

It's comfortable for a long swim from Jun 18 to Nov 3 — about 4.6 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan13Bracing
Feb11Bracing
Mar10Bracing
Apr11Bracing
May15Cool
Jun20Cool
Jul24Refreshing
Aug27Warm
Sep25Warm
Oct22Refreshing
Nov19Cool
Dec16Cool

UV index in Ōmachi in February

LowModerateHighVery highExtreme

Clear-sky midday UV in February peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ōmachi peaks around July 20 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 2 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highModerateJul 20UV 10Dec 21UV 2
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr7Very high
May9Very high
Jun10Very high
Jul10Extreme
Aug10Extreme
Sep9Very high
Oct6High
Nov3Moderate
Dec2Moderate

Air quality in Ōmachi 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 Ōmachi is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (December, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1721 µg/m³Dec 1510 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb14Moderate
Mar20Moderate
Apr21Moderate
May20Moderate
Jun18Moderate
Jul15Moderate
Aug13Moderate
Sep12Good
Oct11Good
Nov11Good
Dec10Good
Location & terrain

Where is Ōmachi?

Ōmachi sits at 36.5°N, 137.9°E, 714 m above sea level, in Japan. The nearest listed city is Hotaka, 18 km away.

Topography around Ōmachi

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

Within 3 km, the terrain around Ōmachi has significant variations in elevation — a maximum elevation change of 486 m around an average of 823 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,371 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,120 m.

The land around Ōmachi is covered by trees (50%) and artificial surfaces (26%) within 3 km, trees (83%) within 16 km, and trees (75%) within 80 km.

3 km
486 m
16 km
2,371 m
80 km
3,120 m
treesgrasslandcroplandartificial surfacesbare terrainwater
February weather nearby: Hotaka 18 km · Chikuma 20 km · Toyoshina 22 km · Azumino 24 km · Sakaki 29 km · Matsumoto 31 km · Nagano 33 km · Ueda 39 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
Shintoism 49%Buddhism 46%other 4%Christianity 1%

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 Ōmachi (36.5°, 137.8667°, elevation 714 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).