Tōon weather in April

In April, Tōon sees average daytime highs of 18°C and overnight lows near 8°C, with 146 mm of precipitation across 11.6 wet days and about 12.8 hours of daylight. It is the 7th-warmest and 7th-wettest month of the year here.

Highs climb over the month, from about 15°C in the first days to 20°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 Tōon's 4th-clearest and 5th-windiest month. For the whole year in context, see Tōon's year-round climate.

Daytime high
18°
7th warmest
Overnight low
6th coldest
Precipitation
146 mm
11.6 wet days
Daylight
12 h 48 min
5:43 AM – 6:34 PM
Cloud cover
60%
4th clearest
Wind
7 km/h
5th windiest
Solar energy
5.29 kWh/m²
Travel score
5.4
out of 10

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 15°C in the first days to 20°C by the end.

A typical April day in Tōon reaches about 18°C in the afternoon and slips back to 8°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 13°C and 22°C. Set against its neighbours, April runs about 5°C warmer than March and about 5°C cooler than May.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
1156
2156
3156
4166
5166
6166
7167
8167
9177
10177
11177
12178
13178
14178
15188
16188
17189
18189
19189
20189
21199
22199
231910
241910
251910
261910
272010
282010
292011
302011

How April really feels in Tōon

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.

Tōon weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -0°7111.25.6100.8
Feb / 8510.84.310.71.3
Mar12° / 12913.61.711.73.0
Apr18° / 14611.60.112.85.4
May22° / 13°17411.9013.76.3
Jun25° / 18°29717.1014.25.4
Jul29° / 22°27918.80144.4
Aug30° / 23°19517.2013.34.2
Sep26° / 19°23215012.25.7
Oct21° / 13°16810.5011.16.5
Nov15° / 929.6010.24.8
Dec10° / 8411.139.82.0

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 (%)
14951
24852
34852
44852
54753
64852
74753
84654
94654
104654
114555
124456
134555
144456
154357
164357
174357
184456
194456
204456
214456
224654
234654
244555
254555
264654
274654
284654
294654
304555

Chance of precipitation in April

Any precipitation

Tōon gets around 146 mm of rain and snow over 11.6 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 39% and peaks near 41% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%50%151015202530
Rain chance (%)
140
239
339
438
538
638
738
838
938
1039
1139
1239
1340
1440
1541
1641
1741
1841
1941
2041
2140
2240
2339
2439
2538
2638
2737
2837
2936
3036

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 89% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
195410
295410
394510
494510
594510
693610
792620
892620
991720
1091720
1191720
1291720
1391720
1491720
1591720
1691720
1791720
1889830
1989830
2089830
2189830
2288930
23871030
24861040
25851140
26841240
27821350
28811351
29801451
30781561

Wind in April

Winds average 7 km/h in April.

Across April, 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.

0246810151015202530
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
297calm
307calm

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 6:04 AM to 5:27 AM, and sunset from 6:23 PM to 6:45 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:046:23
212.46:026:23
312.46:016:24
412.46:006:25
512.55:586:26
612.55:576:26
712.55:556:27
812.65:546:28
912.65:536:29
1012.65:516:29
1112.75:506:30
1212.75:496:31
1312.75:476:32
1412.85:466:32
1512.85:456:33
1612.85:436:34
1712.95:426:35
1812.95:416:35
1912.95:406:36
2013.05:386:37
2113.05:376:38
2213.05:366:39
2313.15:356:39
2413.15:346:40
2513.15:326:41
2613.25:316:42
2713.25:306:42
2813.25:296:43
2913.35:286:44
3013.35:276:45

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.29 kWh/m².

For context, solar energy here swings from a low near 2.43 kWh/m² to a high of 5.59 kWh/m² in May across the year — April's 5.29 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
14.9Bright
25.0Bright
35.0Bright
45.0Bright
55.0Bright
65.1Bright
75.1Bright
85.1Bright
95.1Bright
105.2Bright
115.2Bright
125.2Bright
135.2Bright
145.2Bright
155.3Bright
165.3Bright
175.3Bright
185.3Bright
195.3Bright
205.3Bright
215.4Bright
225.4Bright
235.4Bright
245.4Bright
255.5Bright
265.5Bright
275.5Bright
285.5Bright
295.5Bright
305.5Bright
Planning a trip in April

Hazard calendar for Tōon

In seasonPeak

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

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

Tōon's rainy season runs April–October, 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 Tōon?

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

5.4
Sightseeing
4th-best month of the year
1.7
Beach & pool
7th-best month of the year

April is a reasonable time to visit Tōon for sightseeing.

What to pack for Tōon in April

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

In April, Tōon sees daytime highs around 18°C and nights near 8°C. Worth packing: rain gear and sun protection. About 12 days see rain.

rain gearsun protection

Sea temperature near Tōon 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 26 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 12 to Nov 17 — about 5.2 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Bracing
Feb13Bracing
Mar13Bracing
Apr15Bracing
May17Cool
Jun21Refreshing
Jul24Warm
Aug26Warm
Sep25Warm
Oct23Refreshing
Nov20Refreshing
Dec17Cool

UV index in Tōon in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Tōon peaks around June 23 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highModerateJun 23UV 10Dec 21UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr7Very high
May9Very high
Jun10Extreme
Jul10Extreme
Aug9Very high
Sep10Very high
Oct7High
Nov4Moderate
Dec3Moderate

Air quality in Tōon 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 Tōon is worst in April — around 23 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (October, 11 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1523 µg/m³Oct 1711 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb17Moderate
Mar21Moderate
Apr23Moderate
May21Moderate
Jun19Moderate
Jul15Moderate
Aug15Moderate
Sep12Moderate
Oct11Good
Nov12Good
Dec11Good
Location & terrain

Where is Tōon?

Tōon sits at 33.8°N, 132.9°E, 121 m above sea level, in Japan. The nearest listed city is Haramachi, 10 km away.

Topography around Tōon

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

Within 3 km, the terrain around Tōon has significant variations in elevation — a maximum elevation change of 548 m around an average of 185 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,435 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,895 m.

The land around Tōon is covered by trees (48%), artificial surfaces (26%) and cropland (20%) within 3 km, trees (81%) within 16 km, and trees (53%) and water (40%) within 80 km.

3 km
548 m
16 km
1,435 m
80 km
1,895 m
treesgrasslandcroplandartificial surfacesbare terrainwater
April weather nearby: Haramachi 10 km · Matsuyama 13 km · Masaki-chō 17 km · Iyo 18 km · Shinagawa 21 km · Hōjō 23 km · Saijō 30 km · Imabari 32 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 Tōon (33.7943°, 132.8901°, elevation 121 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).