Yamagata weather in April

In April, Yamagata sees average daytime highs of 18°C and overnight lows near 8°C, with 186 mm of precipitation across 12.3 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 15°C in the first days to 20°C by the end. The sky is clear or mostly clear about 34% 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 Yamagata's 7th-clearest and 3rd-windiest month. For the whole year in context, see Yamagata's year-round climate.

Daytime high
18°
7th warmest
Overnight low
6th coldest
Precipitation
186 mm
12.3 wet days
Daylight
12 h 54 min
5:26 AM – 6:20 PM
Cloud cover
58%
7th clearest
Wind
9 km/h
3rd windiest
Solar energy
5.08 kWh/m²
Travel score
5.3
out of 10

Yamagata is city in Gifu Prefecture, Japan.

Density
123/km²
people per km²
Founded
2003

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 15°C in the first days to 20°C by the end.

A typical April day in Yamagata 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 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)
1155
2155
3156
4156
5166
6166
7166
8167
9167
10177
11177
12177
13178
14178
15188
16188
17188
18188
19189
20189
21199
22199
23199
241910
251910
261910
272010
282010
292010
302011

How April really feels in Yamagata

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.

Yamagata 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 / 789.74.49.91.0
Feb / 829.13.510.71.5
Mar12° / 15711.90.811.73.2
Apr18° / 18612.30.112.95.3
May22° / 13°21613.1013.86.2
Jun25° / 18°27515.6014.35.6
Jul29° / 22°37219.5014.24.3
Aug30° / 23°22815.7013.34.2
Sep27° / 19°29114.6012.25.7
Oct21° / 13°20211.7011.16.4
Nov15° / 1209.3010.14.9
Dec10° / 8610.32.39.62.2

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% 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 52%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15149
25050
35149
45149
55149
65149
75050
84951
95050
105050
115050
125050
135050
144753
154753
164753
174753
184654
194753
204753
214753
224654
234654
244753
254753
264654
274654
284753
294654
304654

Chance of precipitation in April

Any precipitation

Yamagata gets around 186 mm of rain and snow over 12.3 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 42% and peaks near 43% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%50%151015202530
Rain chance (%)
140
240
340
440
540
640
740
841
941
1041
1141
1242
1342
1442
1543
1643
1743
1843
1943
2043
2143
2243
2342
2442
2542
2641
2741
2841
2941
3041

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 94% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
19910
29820
39820
49820
59820
69820
79820
89820
99730
109730
119730
129730
139730
149730
159640
169541
179541
189451
199451
209361
219361
229271
239181
249091
2588102
2687112
2786122
2885132
2983143
3083143

Wind in April

Winds average 9 km/h in April.

Across April, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
110calm
210calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm

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 5:48 AM to 5:09 AM, and sunset from 6:08 PM to 6:32 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:486:08
212.45:466:08
312.45:456:09
412.45:436:10
512.55:426:11
612.55:406:12
712.65:396:13
812.65:376:13
912.65:366:14
1012.75:356:15
1112.75:336:16
1212.75:326:17
1312.85:306:18
1412.85:296:18
1512.95:286:19
1612.95:266:20
1712.95:256:21
1813.05:246:22
1913.05:226:22
2013.05:216:23
2113.15:206:24
2213.15:186:25
2313.15:176:26
2413.25:166:27
2513.25:156:28
2613.25:136:28
2713.35:126:29
2813.35:116:30
2913.45:106:31
3013.45:096:32

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.08 kWh/m².

For context, solar energy here swings from a low near 2.34 kWh/m² to a high of 5.37 kWh/m² in May across the year — April's 5.08 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
14.8Bright
24.9Bright
34.9Bright
44.9Bright
54.9Bright
65.0Bright
75.0Bright
85.0Bright
95.0Bright
105.0Bright
115.0Bright
125.0Bright
135.0Bright
145.1Bright
155.1Bright
165.1Bright
175.1Bright
185.1Bright
195.1Bright
205.1Bright
215.1Bright
225.1Bright
235.1Bright
245.1Bright
255.2Bright
265.2Bright
275.2Bright
285.2Bright
295.2Bright
305.2Bright
Planning a trip in April

Hazard calendar for Yamagata

In seasonPeak

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

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

Yamagata'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 Yamagata?

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

5.3
Sightseeing
5th-best month of the year
1.6
Beach & pool
7th-best month of the year

April is a reasonable time to visit Yamagata for sightseeing.

What to pack for Yamagata in April

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

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

a warm layerrain gearsun protection

Sea temperature near Yamagata 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 68 km away) is warmest in August at about 27°C and coldest in February near 13°C.

It's comfortable for a long swim from May 31 to Nov 9 — about 5.4 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar14Bracing
Apr15Cool
May18Cool
Jun22Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct22Refreshing
Nov19Cool
Dec17Cool

UV index in Yamagata 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 Yamagata peaks around July 15 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 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 highVery highModerateJul 15UV 10Jan 1UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5Moderate
Apr7High
May8Very high
Jun9Very high
Jul10Extreme
Aug9Very high
Sep9Very high
Oct6High
Nov3Moderate
Dec3Moderate

Air quality in Yamagata 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 Yamagata is worst in April — around 26 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1125 µg/m³Aug 1817 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb20Moderate
Mar25Moderate
Apr26Moderate
May25Moderate
Jun21Moderate
Jul17Moderate
Aug17Moderate
Sep17Moderate
Oct18Moderate
Nov18Moderate
Dec16Moderate
Location & terrain

Where is Yamagata?

Yamagata sits at 35.5°N, 136.8°E, 156 m above sea level, in Japan. The nearest listed city is Gifu, 6.0 km away.

Topography around Yamagata

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

Within 3 km, the terrain around Yamagata has significant variations in elevation — a maximum elevation change of 397 m around an average of 83 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 689 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,037 m.

The land around Yamagata is covered by trees (60%) and artificial surfaces (30%) within 3 km, trees (48%) and artificial surfaces (33%) within 16 km, and trees (70%) within 80 km.

3 km
397 m
16 km
689 m
80 km
3,037 m
treesgrasslandcroplandartificial surfacesbare terrainwater
April weather nearby: Gifu 6.0 km · Motosu 9.0 km · Kitagata 9.0 km · Ginan 10 km · Kakamigahara 11 km · Kasamatsuchō 12 km · Kurono 13 km · Mizuho 13 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 Yamagata (35.4762°, 136.7721°, elevation 156 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).