Ōnojō weather in April

In April, Ōnojō sees average daytime highs of 19°C and overnight lows near 10°C, with 130 mm of rain across 11.1 wet days and about 12.8 hours of daylight. It is the 7th-warmest and 6th-wettest month of the year here.

Highs climb over the month, from about 17°C in the first days to 22°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 18 min at the start of April to 13 h 18 min by month's end. Set against the rest of the year, April is Ōnojō's 3rd-clearest and 4th-windiest month. For the whole year in context, see Ōnojō's year-round climate.

Daytime high
19°
7th warmest
Overnight low
10°
6th coldest
Rainfall
130 mm
11.1 wet days
Daylight
12 h 48 min
5:53 AM – 6:43 PM
Cloud cover
61%
3rd clearest
Wind
9 km/h
4th windiest
Solar energy
5.03 kWh/m²
Travel score
5.9
out of 10

Ōnojō is city in Fukuoka Prefecture, Japan.

Density
3,796/km²
people per km²
Founded
1972

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 17°C in the first days to 22°C by the end.

A typical April day in Ōnojō reaches about 19°C in the afternoon and slips back to 10°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 23°C. Set against its neighbours, April runs about 5°C warmer than March and about 5°C cooler than May.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
1178
2178
3178
4178
5188
6189
7189
8189
9189
10199
11199
121910
131910
141910
151910
162010
172010
182011
192011
202011
212011
222111
232111
242112
252112
262112
272112
282212
292212
302213

How April really feels in Ōnojō

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.

Ōnojō weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan10° / 639.61.5102.1
Feb11° / 719.11.210.82.6
Mar14° / 11511.60.211.74.1
Apr19° / 10°13011.1012.85.9
May24° / 15°14710.6013.76.6
Jun27° / 20°30515.8014.25.3
Jul30° / 24°28717.50143.9
Aug32° / 24°17115.1013.23.7
Sep28° / 21°17912.8012.25.5
Oct23° / 15°1018011.27.2
Nov18° / 868.6010.35.8
Dec12° / 699.30.69.83.3

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 13% of April, with mostly cloudy or overcast conditions the remaining 55%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14654
24555
34654
44555
54555
64555
74357
84357
94357
104357
114357
124258
134258
144357
154357
164357
174357
184456
194456
204456
214555
224654
234654
244555
254654
264654
274654
284654
294654
304555

Chance of precipitation in April

Any precipitation

Ōnojō gets around 130 mm of rain over 11.1 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 37% and peaks near 38% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
137
237
337
437
537
637
737
837
937
1037
1137
1237
1338
1438
1538
1638
1738
1838
1938
2037
2137
2237
2337
2437
2536
2636
2736
2835
2935
3035

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 79% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
192710
290820
389920
489920
589920
6881020
7871030
8871030
9861130
10861130
11861130
12841240
13841240
14831340
15831340
16811441
17801451
18791551
19791551
20781651
21761761
22751861
23731971
24712072
25692182
26672292
27662392
286324103
296324103
306125113

Wind in April

Winds average 9 km/h in April.

Across April, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 18 min at the start of April to 13 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 60 minutes over April. Sunrise moves from 6:13 AM to 5:37 AM, and sunset from 6:32 PM to 6:54 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:136:32
212.36:126:33
312.46:116:34
412.46:096:34
512.56:086:35
612.56:076:36
712.56:056:37
812.66:046:37
912.66:026:38
1012.66:016:39
1112.76:006:40
1212.75:596:40
1312.75:576:41
1412.85:566:42
1512.85:556:43
1612.85:536:43
1712.95:526:44
1812.95:516:45
1912.95:506:46
2013.05:486:46
2113.05:476:47
2213.05:466:48
2313.15:456:49
2413.15:446:49
2513.15:426:50
2613.25:416:51
2713.25:406:52
2813.25:396:52
2913.35:386:53
3013.35:376:54

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.03 kWh/m².

For context, solar energy here swings from a low near 2.18 kWh/m² to a high of 5.36 kWh/m² in May across the year — April's 5.03 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.8Bright
54.8Bright
64.8Bright
74.8Bright
84.9Bright
94.9Bright
104.9Bright
114.9Bright
124.9Bright
135.0Bright
145.0Bright
155.0Bright
165.0Bright
175.0Bright
185.1Bright
195.1Bright
205.1Bright
215.1Bright
225.1Bright
235.2Bright
245.2Bright
255.2Bright
265.2Bright
275.2Bright
285.2Bright
295.2Bright
305.3Bright
Planning a trip in April

Hazard calendar for Ōnojō

In seasonPeak

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

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

Ōnojō's rainy season runs May–September, 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 April a good time to visit Ōnojō?

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

5.9
Sightseeing
3rd-best month of the year
2.8
Beach & pool
7th-best month of the year

April is a reasonable time to visit Ōnojō for sightseeing.

What to pack for Ōnojō in April

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

In April, Ōnojō sees daytime highs around 19°C and nights near 10°C. Worth packing: rain gear and sun protection. About 11 days see rain.

rain gearsun protection

Sea temperature near Ōnojō in April

The nearest coast averages about 15°C in April — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 34 km away) is warmest in August at about 27°C and coldest in February near 14°C.

It's comfortable for a long swim from Jun 9 to Nov 20 — about 5.4 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan16Cool
Feb14Bracing
Mar14Bracing
Apr15Cool
May18Cool
Jun21Refreshing
Jul24Warm
Aug27Warm
Sep25Warm
Oct23Refreshing
Nov20Refreshing
Dec18Cool

UV index in Ōnojō in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ōnojō peaks around July 21 at about 9 (very high) — 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 — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateJul 21UV 9Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr8Very high
May8Very high
Jun7Very high
Jul9Very high
Aug9Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Ōnojō 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 Ōnojō is worst in April — around 25 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (October, 12 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1225 µg/m³Oct 1212 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb20Moderate
Mar25Moderate
Apr25Moderate
May23Moderate
Jun18Moderate
Jul13Moderate
Aug15Moderate
Sep13Moderate
Oct12Moderate
Nov15Moderate
Dec14Moderate
Location & terrain

Where is Ōnojō?

Ōnojō sits at 33.5°N, 130.5°E, 25 m above sea level, in Japan. The nearest listed city is Kasuga, 2.0 km away.

Topography around Ōnojō

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

Within 3 km, the terrain around Ōnojō has significant variations in elevation — a maximum elevation change of 370 m around an average of 51 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,042 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,509 m.

The land around Ōnojō is covered by artificial surfaces (75%) and trees (20%) within 3 km, trees (52%) and artificial surfaces (33%) within 16 km, and water (42%) and trees (41%) within 80 km.

3 km
370 m
16 km
1,042 m
80 km
1,509 m
treesgrasslandcroplandartificial surfacesbare terrainwater
April weather nearby: Kasuga 2.0 km · Umi 5.0 km · Dazaifu 5.0 km · Katanawa 5.0 km · Chikushino-shi 6.0 km · Shime 6.0 km · Sue 7.0 km · Fukuoka 9.0 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 Ōnojō (33.5357°, 130.4786°, elevation 25 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).