Aso weather in February

In February, Aso sees average daytime highs of 9°C and overnight lows near 0°C, with 92 mm of precipitation across 9.4 wet days and about 10.8 hours of daylight. It is the 11th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 8°C in the first days to 11°C by the end. The sky is clear or mostly clear about 26% of the time in February, and the air most often feels dry.

Daylight stretches from about 10 h 24 min at the start of February to 11 h 12 min by month's end. Set against the rest of the year, February is Aso's 4th-clearest and 2nd-windiest month. For the whole year in context, see Aso's year-round climate.

Daytime high
11th warmest
Overnight low
2nd coldest
Precipitation
92 mm
9.4 wet days
Daylight
10 h 48 min
7:07 AM – 5:54 PM
Cloud cover
61%
4th clearest
Wind
8 km/h
2nd windiest
Solar energy
3.26 kWh/m²
Travel score
1.9
out of 10

Aso is city in Kumamoto Prefecture, Japan.

Density
72/km²
people per km²
Founded
2005

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 8°C in the first days to 11°C by the end.

A typical February day in Aso reaches about 9°C in the afternoon and slips back to 0°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 4°C and 14°C. Set against its neighbours, February runs about 2°C warmer than January and about 4°C cooler than March.

-5°10°15°20°151015202528
Avg high (°C)Avg low (°C)
18-1
28-1
38-1
48-1
58-1
680
780
880
990
1090
1190
1290
1390
1490
1590
1690
17100
18101
19101
20101
21101
22101
23101
24111
25111
26111
27112
28112

How February really feels in Aso

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
wind chill below the day's low

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

Aso weather by month

How February compares with the rest of the year at a glance. February is the 11th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -1°698.82.810.11.2
Feb / 929.42.110.81.9
Mar13° / 14012.80.911.73.6
Apr18° / 15811.70.112.85.5
May23° / 13°18112.4013.76.3
Jun25° / 18°41318014.15.2
Jul28° / 21°31918.80144.4
Aug30° / 22°16416.3013.24.4
Sep27° / 18°16512.9012.26.0
Oct22° / 12°1027.7011.27.1
Nov16° / 818.1010.35.3
Dec10° / 698.61.39.92.4

Cloud cover in February

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% of the time in February.

Beyond those clear spells, partly cloudy skies cover about 19% of February, with mostly cloudy or overcast conditions the remaining 56%.

0%25%50%75%100%151015202528
Clearer (%)Cloudier (%)
14357
24357
34456
44555
54456
64555
74654
84654
94555
104654
114555
124555
134555
144555
154555
164456
174456
184456
194456
204357
214357
224357
234357
244357
254357
264357
274555
284555

Chance of precipitation in February

Any precipitationSnow

Aso gets around 92 mm of rain and snow over 9.4 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 34% and peaks near 38% on the wettest days, and about 2 days bring snow. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202528
Rain chance (%)Snow chance (%)
1309
2309
3309
4309
5319
6319
7329
8329
9339
10339
11339
12349
13349
14349
15348
16358
17358
18357
19357
20356
21356
22365
23365
24365
25374
26374
27384
28384

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 (%)Comfortable (%)
11000
21000
31000
41000
51000
61000
7991
8991
9991
10991
11991
12991
13991
14991
15991
16991
17991
18991
191000
201000
211000
221000
231000
241000
251000
261000
271000
281000

Wind in February

Winds average 8 km/h in February.

Across February, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202528
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm

Sunrise & sunset in February

DaylightNight

Daylight runs from about 10 h 24 min at the start of February to 11 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over February. Sunrise moves from 7:17 AM to 6:53 AM, and sunset from 5:41 PM to 6:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202528
Daylight (h)Sunrise (AM)Sunset (PM)
110.47:175:41
210.47:175:42
310.47:165:43
410.57:155:44
510.57:155:45
610.57:145:46
710.67:135:47
810.67:135:48
910.67:125:48
1010.67:115:49
1110.77:105:50
1210.77:095:51
1310.77:085:52
1410.87:085:53
1510.87:075:54
1610.87:065:55
1710.97:055:56
1810.97:045:57
1910.97:035:57
2010.97:025:58
2111.07:015:59
2211.07:006:00
2311.06:596:01
2411.16:586:02
2511.16:566:03
2611.16:556:04
2711.26:546:04
2811.26:536:05

Solar energy in February

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in February, about 3.26 kWh/m².

For context, solar energy here swings from a low near 2.33 kWh/m² to a high of 5.19 kWh/m² in May across the year — February's 3.26 kWh/m² falls in the middle.

01234151015202528
Solar energy (kWh/m²)Level
12.9Moderate
22.9Moderate
32.9Moderate
43.0Moderate
53.0Moderate
63.0Moderate
73.0Moderate
83.1Moderate
93.1Moderate
103.1Moderate
113.1Moderate
123.2Moderate
133.2Moderate
143.2Moderate
153.3Moderate
163.3Moderate
173.3Moderate
183.3Moderate
193.4Moderate
203.4Moderate
213.4Moderate
223.5Moderate
233.5Moderate
243.5Moderate
253.5Moderate
263.6Moderate
273.6Moderate
283.6Moderate
Planning a trip in February

Hazard calendar for Aso

In seasonPeak

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

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

Aso's rainy season runs June–July, when most of the year's rain falls.

Pacific typhoon
Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is February a good time to visit Aso?

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

1.9
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 Aso.

What to pack for Aso in February

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

In February, Aso sees daytime highs around 9°C and nights near 0°C. Pack a warm layer. Worth having: rain gear. About 9 days see rain.

a warm layerrain gear

Sea temperature near Aso 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 43 km away) is warmest in August at about 27°C and coldest in February near 13°C.

It's comfortable for a long swim from May 27 to Nov 13 — about 5.6 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar14Bracing
Apr16Cool
May19Cool
Jun22Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct23Refreshing
Nov20Cool
Dec17Cool

UV index in Aso 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 Aso peaks around June 23 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highModerateJun 23UV 10Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar7High
Apr8Very high
May9Very high
Jun11Extreme
Jul10Extreme
Aug10Very high
Sep10Very high
Oct7High
Nov4Moderate
Dec3Moderate

Air quality in Aso 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 Aso is worst in March — around 30 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (September, 14 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 1829 µg/m³Sep 2214 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb20Moderate
Mar30Moderate
Apr24Moderate
May22Moderate
Jun19Moderate
Jul14Moderate
Aug15Moderate
Sep14Moderate
Oct14Moderate
Nov15Moderate
Dec14Moderate
Location & terrain

Where is Aso?

Aso sits at 32.9°N, 131.1°E, 520 m above sea level, in Japan. The nearest listed city is Ōzu, 20 km away.

Topography around Aso

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

Within 3 km, the terrain around Aso has significant variations in elevation — a maximum elevation change of 428 m around an average of 568 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,443 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,757 m.

The land around Aso is covered by cropland (53%) and trees (29%) within 3 km, trees (65%) and cropland (20%) within 16 km, and trees (71%) within 80 km.

3 km
428 m
16 km
1,443 m
80 km
1,757 m
treesgrasslandcroplandartificial surfaceswater
February weather nearby: Ōzu 20 km · Kikuchi 25 km · Okino 28 km · Kōshi 29 km · Takedamachi 30 km · Shimada 34 km · Mifune 34 km · Kotō 36 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 Aso (32.9373°, 131.0801°, elevation 520 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).