Mashiko weather in April

In April, Mashiko sees average daytime highs of 18°C and overnight lows near 8°C, with 109 mm of precipitation across 11.7 wet days and about 12.9 hours of daylight. It is the 7th-warmest and 7th-wettest month of the year here.

Highs climb over the month, from about 16°C in the first days to 20°C by the end. The sky is clear or mostly clear about 31% 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 24 min by month's end. Set against the rest of the year, April is Mashiko's 6th-clearest and 1st-windiest month. For the whole year in context, see Mashiko's year-round climate.

Daytime high
18°
7th warmest
Overnight low
6th coldest
Precipitation
109 mm
11.7 wet days
Daylight
12 h 54 min
5:12 AM – 6:08 PM
Cloud cover
61%
6th clearest
Wind
9 km/h
1st windiest
Solar energy
4.88 kWh/m²
Travel score
5.5
out of 10

Mashiko is town in Haga district, Tochigi prefecture, Japan.

Density
291/km²
people per km²
Founded
1894

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 16°C in the first days to 20°C by the end.

A typical April day in Mashiko reaches about 18°C in the afternoon and slips back to 8°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 13°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)
1165
2165
3166
4166
5166
6166
7176
8177
9177
10177
11177
12187
13188
14188
15188
16188
17188
18199
19199
20199
21199
22199
232010
242010
252010
262010
272010
282110
292111
302111

How April really feels in Mashiko

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.

Mashiko 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°526.11.49.81.8
Feb10° / 516.61.810.62.2
Mar13° / 9711.41.111.73.6
Apr18° / 10911.70.212.95.5
May23° / 13°13412.4013.96.3
Jun26° / 18°14415.1014.45.5
Jul29° / 22°17416.4014.24.4
Aug30° / 23°12813.8013.44.2
Sep27° / 19°16514.1012.25.6
Oct21° / 13°16412011.16.2
Nov16° / 768.1010.15.2
Dec11° / 496.40.39.63.0

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 15% of April, with mostly cloudy or overcast conditions the remaining 54%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15149
25149
35050
44951
54951
64951
74852
84753
94753
104654
114654
124555
134456
144456
154456
164357
174357
184357
194456
204456
214456
224456
234456
244456
254456
264456
274555
284555
294555
304555

Chance of precipitation in April

Any precipitationSnow

Mashiko gets around 109 mm of rain and snow over 11.7 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 40% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%50%151015202530
Rain chance (%)Snow chance (%)
1392
2392
3401
4401
5401
6401
7401
8401
9401
10401
11401
12400
13400
14400
15400
16400
17390
18390
19390
20380
21380
22380
23380
24370
25370
26370
27370
28370
29370
30360

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 93% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
19910
29910
39910
49910
59910
69910
79910
89820
99820
109820
119820
129730
139730
149631
159541
169541
179451
189451
199361
209361
219271
229181
239082
248992
2588102
2687112
2786122
2884133
2983143
3082153

Wind in April

Winds average 9 km/h in April, the windiest month of the year.

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 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 66 minutes over April. Sunrise moves from 5:34 AM to 4:54 AM, and sunset from 5:55 PM to 6:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:345:55
212.45:325:56
312.45:315:56
412.55:295:57
512.55:285:58
612.55:265:59
712.65:256:00
812.65:236:01
912.75:226:02
1012.75:216:02
1112.75:196:03
1212.85:186:04
1312.85:166:05
1412.95:156:06
1512.95:136:07
1612.95:126:08
1713.05:116:09
1813.05:096:09
1913.05:086:10
2013.15:066:11
2113.15:056:12
2213.25:046:13
2313.25:036:14
2413.25:016:15
2513.35:006:16
2613.34:596:16
2713.34:576:17
2813.44:566:18
2913.44:556:19
3013.44:546:20

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 4.88 kWh/m².

For context, solar energy here swings from a low near 2.37 kWh/m² to a high of 5.08 kWh/m² in May across the year — April's 4.88 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.7Bright
54.7Bright
64.7Bright
74.8Bright
84.8Bright
94.8Bright
104.8Bright
114.8Bright
124.8Bright
134.8Bright
144.8Bright
154.8Bright
164.8Bright
174.8Bright
184.9Bright
194.9Bright
204.9Bright
214.9Bright
224.9Bright
235.0Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
285.1Bright
295.1Bright
305.1Bright
Planning a trip in April

Hazard calendar for Mashiko

In seasonPeak

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

Mashiko 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 Mashiko?

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

5.5
Sightseeing
4th-best month of the year
2.0
Beach & pool
7th-best month of the year

April is a reasonable time to visit Mashiko for sightseeing.

What to pack for Mashiko in April

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

In April, Mashiko 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 Mashiko 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 48 km away) is warmest in August at about 24°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 24 to Oct 28 — about 4.2 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan15Bracing
Feb13Bracing
Mar13Bracing
Apr15Bracing
May17Cool
Jun19Cool
Jul22Refreshing
Aug24Warm
Sep23Refreshing
Oct21Refreshing
Nov19Cool
Dec16Cool

UV index in Mashiko 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 Mashiko peaks around July 17 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 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 highModerateJul 17UV 9Jan 1UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar4Moderate
Apr6High
May8Very high
Jun9Very high
Jul10Very high
Aug9Very high
Sep8Very high
Oct6High
Nov3Moderate
Dec2Moderate

Air quality in Mashiko 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 Mashiko is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (December, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1821 µg/m³Dec 189 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb13Moderate
Mar19Moderate
Apr21Moderate
May20Moderate
Jun16Moderate
Jul14Moderate
Aug13Moderate
Sep11Good
Oct11Good
Nov10Good
Dec9Good
Location & terrain

Where is Mashiko?

Mashiko sits at 36.5°N, 140.1°E, 79 m above sea level, in Japan. The nearest listed city is Mooka, 8.0 km away.

Topography around Mashiko

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

Within 3 km, the terrain around Mashiko has only modest variations in elevation — a maximum elevation change of 237 m around an average of 107 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 491 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,553 m.

The land around Mashiko is covered by trees (54%) and cropland (25%) within 3 km, trees (54%) and cropland (28%) within 16 km, and trees (49%) and cropland (20%) within 80 km.

3 km
237 m
16 km
491 m
80 km
2,553 m
treesgrasslandcroplandartificial surfaceswater
April weather nearby: Mooka 8.0 km · Iwase 13 km · Kaminokawa 17 km · Kasama 18 km · Chikusei 20 km · Karasuyama 21 km · Hōshakuji 21 km · Shimodate 21 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 Mashiko (36.4667°, 140.1°, elevation 79 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).