Mizusawa weather in April

In April, Mizusawa sees average daytime highs of 13°C and overnight lows near 3°C, with 98 mm of precipitation across 13.4 wet days and about 13 hours of daylight. It is the 7th-warmest and 7th-wettest month of the year here.

Highs climb over the month, from about 10°C in the first days to 16°C by the end. The sky is clear or mostly clear about 24% 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 Mizusawa's 2nd-clearest and 4th-windiest month. For the whole year in context, see Mizusawa's year-round climate.

Daytime high
13°
7th warmest
Overnight low
6th coldest
Precipitation
98 mm
13.4 wet days
Daylight
13 hours
5:05 AM – 6:06 PM
Cloud cover
63%
2nd clearest
Wind
10 km/h
4th windiest
Solar energy
5.04 kWh/m²
Travel score
3.3
out of 10

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 10°C in the first days to 16°C by the end.

A typical April day in Mizusawa reaches about 13°C in the afternoon and slips back to 3°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 8°C and 18°C. Set against its neighbours, April runs about 7°C warmer than March and about 5°C cooler than May.

10°20°151015202530
Avg high (°C)Avg low (°C)
1100
2101
3101
4101
5101
6112
7112
8112
9112
10122
11123
12123
13123
14133
15133
16134
17134
18134
19144
20144
21145
22145
23155
24155
25155
26156
27156
28166
29166
30166

How April really feels in Mizusawa

Once humidity and wind are folded in, April averages 0 days that feel above 32°C and 12 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
12
wind chill below the day's low

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

Mizusawa 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 / -7°5810.7129.60.0
Feb / -7°5310.19.710.50.0
Mar / -3°9213.28.211.70.6
Apr13° / 9813.42.2133.3
May18° / 11012.5014.15.4
Jun21° / 14°12312.9014.75.7
Jul25° / 18°16616.5014.55.5
Aug26° / 19°15315.2013.55.6
Sep22° / 15°15113.5012.35.8
Oct17° / 12011.20115.0
Nov10° / 7311.72.29.92.2
Dec / -3°6812.48.89.30.1

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 20% of April, with mostly cloudy or overcast conditions the remaining 56%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14555
24555
34555
44555
54456
64456
74555
84555
94555
104456
114357
124456
134456
144357
154357
164258
174258
184258
194258
204357
214258
224357
234357
244456
254357
264357
274357
284357
294357
304258

Chance of precipitation in April

Any precipitationSnow

Mizusawa gets around 98 mm of rain and snow over 13.4 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 44% and peaks near 46% on the wettest days, and about 2 days bring snow.

0%20%40%60%151015202530
Rain chance (%)Snow chance (%)
14616
24615
34614
44614
54613
64612
74612
84611
94611
104510
11459
12459
13448
14448
15447
16447
17446
18446
19445
20445
21444
22434
23434
24433
25433
26433
27422
28422
29422
30422

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 99% 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
14991
15991
16991
17991
18991
19991
20991
21991
22991
23991
24991
25991
26982
27982
28982
29982
30982

Wind in April

Winds average 10 km/h in April.

Across April, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
111calm
211calm
311calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm

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 5:29 AM to 4:45 AM, and sunset from 5:52 PM to 6:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:295:52
212.45:275:53
312.55:255:54
412.55:245:55
512.65:225:56
612.65:215:57
712.65:195:57
812.75:175:58
912.75:165:59
1012.85:146:00
1112.85:136:01
1212.95:116:02
1312.95:106:03
1412.95:086:04
1513.05:076:05
1613.05:056:06
1713.15:036:07
1813.15:026:08
1913.15:016:09
2013.24:596:10
2113.24:586:11
2213.34:566:12
2313.34:556:13
2413.34:536:14
2513.44:526:15
2613.44:516:16
2713.54:496:17
2813.54:486:18
2913.54:476:19
3013.64:456:20

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.04 kWh/m².

For context, solar energy here swings from a low near 1.98 kWh/m² to a high of 5.24 kWh/m² in May across the year — April's 5.04 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.8Bright
44.8Bright
54.8Bright
64.9Bright
74.9Bright
84.9Bright
94.9Bright
104.9Bright
115.0Bright
125.0Bright
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 Mizusawa

In seasonPeak

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

Mizusawa 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 Mizusawa?

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

3.3
Sightseeing
7th-best month of the year
0.1
Beach & pool
7th-best month of the year

April is a weaker month for outdoor sightseeing in Mizusawa.

What to pack for Mizusawa in April

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

In April, Mizusawa sees daytime highs around 13°C and nights near 3°C. Worth packing: a warm layer, rain gear and sun protection. About 13 days see rain.

a warm layerrain gearsun protection

Sea temperature near Mizusawa in April

The nearest coast averages about 9°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 51 km away) is warmest in August at about 22°C and coldest in March near 7°C.

It's comfortable for a long swim from Jul 21 to Oct 3 — about 2.5 months when the water holds above 20°C.

5°10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan11Bracing
Feb8Bracing
Mar7Bracing
Apr9Bracing
May12Bracing
Jun17Cool
Jul20Cool
Aug22Refreshing
Sep22Refreshing
Oct19Cool
Nov16Cool
Dec13Bracing

UV index in Mizusawa 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 Mizusawa peaks around August 19 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 2 (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 9Jan 1UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun8Very high
Jul6High
Aug9Very high
Sep7Very high
Oct5Moderate
Nov3Moderate
Dec2Low

Air quality in Mizusawa 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 Mizusawa is worst in April — around 20 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (December, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1620 µg/m³Dec 1710 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb14Moderate
Mar19Moderate
Apr20Moderate
May19Moderate
Jun14Moderate
Jul12Moderate
Aug11Good
Sep11Good
Oct11Good
Nov11Good
Dec9Good
Location & terrain

Where is Mizusawa?

Mizusawa sits at 39.1°N, 141.1°E, 64 m above sea level, in Japan. The nearest listed city is Ōshū, 3.0 km away.

Topography around Mizusawa

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

Within 3 km, the terrain around Mizusawa has only modest variations in elevation — a maximum elevation change of 90 m around an average of 59 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 757 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,007 m.

The land around Mizusawa is covered by artificial surfaces (44%) and cropland (43%) within 3 km, trees (58%) and cropland (31%) within 16 km, and trees (72%) within 80 km.

3 km
90 m
16 km
757 m
80 km
2,007 m
treesgrasslandcroplandartificial surfacesbare terrainwater
April weather nearby: Ōshū 3.0 km · Kanegasaki 8.0 km · Kitakami 17 km · Ichinoseki 24 km · Hanamaki 28 km · Tōno 40 km · Kurihara 44 km · Kesennuma 46 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 Mizusawa (39.1333°, 141.1333°, elevation 64 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).