Oga weather in April

In April, Oga sees average daytime highs of 10°C and overnight lows near 7°C, with 98 mm of precipitation across 12.7 wet days and about 13 hours of daylight. It is the 8th-warmest and 12th-wettest month of the year here.

Highs climb over the month, from about 8°C in the first days to 12°C by the end. The sky is clear or mostly clear about 32% of the time in April, and the air most often feels dry.

Daylight stretches from about 12 h 24 min at the start of April to 13 h 36 min by month's end. Set against the rest of the year, April is Oga's 1st-clearest and 7th-windiest month. For the whole year in context, see Oga's year-round climate.

Daytime high
10°
8th warmest
Overnight low
5th coldest
Precipitation
98 mm
12.7 wet days
Daylight
13 h 06 min
5:09 AM – 6:12 PM
Cloud cover
57%
1st clearest
Wind
22 km/h
7th windiest
Solar energy
5.26 kWh/m²
Travel score
2.1
out of 10

Oga is city in Akita Prefecture, Japan.

Density
104/km²
people per km²
Founded
2005

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

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 8°C in the first days to 12°C by the end.

A typical April day in Oga reaches about 10°C in the afternoon and slips back to 7°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 7°C and 13°C. Set against its neighbours, April runs about 4°C warmer than March and about 5°C cooler than May.

10°15°151015202530
Avg high (°C)Avg low (°C)
185
285
385
486
586
696
796
896
996
1096
1197
1297
13107
14107
15107
16107
17107
18108
19108
20108
21118
22118
23118
24118
25119
26119
27119
28129
29129
30129

How April really feels in Oga

Once humidity and wind are folded in, April averages 0 days that feel above 32°C and 0 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
0
wind chill below the day's low

April sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Oga weather by month

How April compares with the rest of the year at a glance. April is the 8th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 16925.417.99.50.0
Feb / 11920.514.210.40.0
Mar / 10817.26.711.70.5
Apr10° / 9812.70.3132.1
May14° / 12°11712.6014.24.1
Jun19° / 17°12011014.85.9
Jul23° / 21°19014.4014.56.0
Aug26° / 23°17814.1013.66.2
Sep23° / 21°18014012.36.0
Oct18° / 15°16615.3010.95.0
Nov12° / 17419.61.29.82.5
Dec / 20324.810.29.20.6

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% of the time in April, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 16% of April, with mostly cloudy or overcast conditions the remaining 52%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15050
25149
35149
45149
55149
65149
75149
85149
95149
105149
115050
125050
135050
144951
154951
164852
174753
184753
194753
204654
214654
224654
234753
244654
254654
264654
274654
284753
294654
304654

Chance of precipitation in April

Any precipitationSnow

Oga gets around 98 mm of rain and snow over 12.7 wet days in April, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 43% and peaks near 47% on the wettest days, and about 0 day brings snow.

0%20%40%60%151015202530
Rain chance (%)Snow chance (%)
1477
2476
3475
4464
5463
6463
7452
8452
9441
10441
11431
12431
13430
14420
15420
16420
17420
18410
19410
20410
21410
22410
23410
24410
25410
26410
27410
28410
29410
30410

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April 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%151015202530
Dry (%)Comfortable (%)
11000
21000
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
151000
161000
171000
181000
191000
201000
211000
221000
231000
241000
251000
261000
27991
28991
29991
30991

Wind in April

Winds average 22 km/h in April.

Across April, daily wind ranges from about 21 km/h on the calmest days to 24 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202530
Wind speed (km/h)Feels
124breezy
224breezy
324breezy
424breezy
524breezy
623breezy
723breezy
823breezy
923breezy
1023breezy
1123breezy
1223breezy
1323breezy
1422breezy
1522breezy
1622breezy
1722breezy
1822breezy
1922breezy
2022breezy
2122breezy
2222breezy
2322breezy
2421breezy
2521breezy
2621breezy
2721breezy
2821breezy
2921breezy
3021breezy

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 24 min at the start of April to 13 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 72 minutes over April. Sunrise moves from 5:33 AM to 4:49 AM, and sunset from 5:57 PM to 6:27 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:335:57
212.45:325:58
312.55:305:59
412.55:296:00
512.65:276:01
612.65:256:02
712.75:246:03
812.75:226:04
912.75:206:05
1012.85:196:06
1112.85:176:07
1212.95:166:08
1312.95:146:09
1413.05:126:10
1513.05:116:11
1613.15:096:12
1713.15:086:13
1813.15:066:14
1913.25:056:15
2013.25:036:16
2113.35:026:17
2213.35:006:18
2313.34:596:20
2413.44:576:21
2513.44:566:22
2613.54:556:23
2713.54:536:24
2813.54:526:25
2913.64:516:26
3013.64:496:27

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.26 kWh/m².

For context, solar energy here swings from a low near 1.57 kWh/m² to a high of 5.86 kWh/m² in June across the year — April's 5.26 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
14.8Bright
24.9Bright
34.9Bright
45.0Bright
55.0Bright
65.0Bright
75.0Bright
85.1Bright
95.1Bright
105.1Bright
115.2Bright
125.2Bright
135.2Bright
145.2Bright
155.3Bright
165.3Bright
175.3Bright
185.3Bright
195.3Bright
205.3Bright
215.3Bright
225.4Bright
235.4Bright
245.4Bright
255.4Bright
265.5Bright
275.5Bright
285.5Bright
295.5Bright
305.5Bright
Planning a trip in April

Hazard calendar for Oga

In seasonPeak

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

Oga 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 April a good time to visit Oga?

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

2.1
Sightseeing
8th-best month of the year
0.0
Beach & pool
8th-best month of the year

April is a weaker month for outdoor sightseeing in Oga.

What to pack for Oga in April

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

In April, Oga sees daytime highs around 10°C and nights near 7°C. Pack a warm layer. Worth having: rain gear, sun protection and a windbreaker. About 13 days see rain.

a warm layerrain gearsun protectiona windbreaker

Sea temperature near Oga in April

The nearest coast averages about 10°C in April — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 25°C and coldest in March near 9°C.

It's comfortable for a long swim from Jun 30 to Oct 23 — about 3.8 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan11Bracing
Feb9Bracing
Mar9Bracing
Apr10Bracing
May14Bracing
Jun18Cool
Jul22Refreshing
Aug25Warm
Sep24Warm
Oct21Refreshing
Nov17Cool
Dec14Bracing

UV index in Oga in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Oga peaks around August 19 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighVery highHighModerateLowAug 19UV 8Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar3Moderate
Apr6High
May8Very high
Jun7Very high
Jul5Moderate
Aug9Very high
Sep7High
Oct4Moderate
Nov2Moderate
Dec1Low

Air quality in Oga in April

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Oga is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (September, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1421 µg/m³Sep 169 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb15Moderate
Mar20Moderate
Apr21Moderate
May18Moderate
Jun13Moderate
Jul11Good
Aug10Good
Sep9Good
Oct10Good
Nov10Good
Dec10Good
Location & terrain

Where is Oga?

Oga sits at 39.9°N, 139.8°E, 6 m above sea level, in Japan. The nearest listed city is Tennō, 11 km away.

Topography around Oga

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

Within 3 km, the terrain around Oga has only modest variations in elevation — a maximum elevation change of 112 m around an average of 15 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 713 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,449 m.

The land around Oga is covered by water (61%) and trees (27%) within 3 km, water (65%) and trees (22%) within 16 km, and trees (46%) and water (45%) within 80 km.

3 km
112 m
16 km
713 m
80 km
1,449 m
treesgrasslandcroplandartificial surfaceswater
April weather nearby: Tennō 11 km · Katagami 13 km · Akita 29 km · Moritake 32 km · Noshiro 40 km · Yurihonjō 56 km · Takanosu 59 km · Kita-Akita 59 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 Oga (39.871°, 139.8493°, elevation 6 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).