Susono weather in April

In April, Susono sees average daytime highs of 16°C and overnight lows near 8°C, with 178 mm of precipitation across 14.4 wet days and about 12.9 hours of daylight. It is the 7th-warmest and 8th-wettest month of the year here.

Highs climb over the month, from about 14°C in the first days to 18°C by the end. The sky is clear or mostly clear about 25% 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 Susono's 7th-clearest and 1st-windiest month. For the whole year in context, see Susono's year-round climate.

Daytime high
16°
7th warmest
Overnight low
6th coldest
Precipitation
178 mm
14.4 wet days
Daylight
12 h 54 min
5:18 AM – 6:11 PM
Cloud cover
66%
7th clearest
Wind
7 km/h
1st windiest
Solar energy
4.91 kWh/m²
Travel score
4.5
out of 10

Susono is city in Shizuoka Prefecture, Japan.

Density
371/km²
people per km²
Founded
1971

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 14°C in the first days to 18°C by the end.

A typical April day in Susono reaches about 16°C in the afternoon and slips back to 8°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 11°C and 21°C. Set against its neighbours, April runs about 5°C warmer than March and about 4°C cooler than May.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
1145
2145
3146
4146
5146
6156
7156
8157
9157
10157
11167
12167
13167
14168
15168
16168
17178
18178
19179
20179
21179
22179
23179
24189
251810
261810
271810
281810
291810
301910

How April really feels in Susono

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.

Susono weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 9710.14.69.91.1
Feb / 10610.84.810.71.2
Mar11° / 184163.611.72.4
Apr16° / 17814.40.412.94.5
May20° / 13°18614.6013.85.5
Jun23° / 17°24317.8014.35.2
Jul27° / 21°23517.8014.14.9
Aug28° / 22°18516.4013.34.9
Sep25° / 19°26316.7012.25.5
Oct20° / 13°26115.7011.15.4
Nov15° / 13212.1010.24.2
Dec10° / 9010.419.72.3

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 14% of April, with mostly cloudy or overcast conditions the remaining 61%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14159
24258
34258
44258
54159
64159
74258
84258
94159
104060
114159
124060
133961
143862
153763
163763
173664
183664
193664
203664
213763
223664
233763
243763
253763
263862
273763
283763
293763
303862

Chance of precipitation in April

Any precipitationSnow

Susono gets around 178 mm of rain and snow over 14.4 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 48% and peaks near 50% on the wettest days, and about 0 day brings snow.

0%20%40%60%151015202530
Rain chance (%)Snow chance (%)
1505
2494
3494
4494
5494
6493
7493
8493
9493
10492
11492
12492
13492
14492
15491
16501
17501
18491
19491
20491
21481
22480
23480
24470
25470
26470
27460
28460
29450
30450

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
29820
39820
49820
59820
69820
79820
89820
99631
109631
119631
129631
139541
149541
159541
169541
179451
189451
199451
209262
219262
229172
239082
248992
2588102
2688102
2787112
2886122
2985132
3084142

Wind in April

Winds average 7 km/h in April, the windiest month of the year.

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 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 5:39 AM to 5:01 AM, and sunset from 5:59 PM to 6:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:395:59
212.45:386:00
312.45:366:01
412.45:356:01
512.55:336:02
612.55:326:03
712.65:306:04
812.65:296:05
912.65:286:05
1012.75:266:06
1112.75:256:07
1212.75:236:08
1312.85:226:09
1412.85:216:10
1512.85:196:10
1612.95:186:11
1712.95:176:12
1813.05:156:13
1913.05:146:14
2013.05:136:14
2113.15:116:15
2213.15:106:16
2313.15:096:17
2413.25:086:18
2513.25:076:19
2613.25:056:19
2713.35:046:20
2813.35:036:21
2913.35:026:22
3013.45:016:23

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 4.91 kWh/m².

For context, solar energy here swings from a low near 2.41 kWh/m² to a high of 5.27 kWh/m² in May across the year — April's 4.91 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.7Bright
54.7Bright
64.7Bright
74.7Bright
84.8Bright
94.8Bright
104.8Bright
114.8Bright
124.8Bright
134.8Bright
144.8Bright
154.8Bright
164.9Bright
174.9Bright
184.9Bright
194.9Bright
204.9Bright
215.0Bright
225.0Bright
235.0Bright
245.1Bright
255.1Bright
265.1Bright
275.2Bright
285.2Bright
295.2Bright
305.2Bright
Planning a trip in April

Hazard calendar for Susono

In seasonPeak

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

Susono 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 Susono?

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

4.5
Sightseeing
7th-best month of the year
0.8
Beach & pool
7th-best month of the year

April is a reasonable time to visit Susono for sightseeing.

What to pack for Susono in April

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

In April, Susono sees daytime highs around 16°C and nights near 8°C. Pack rain gear. Worth having: a warm layer and sun protection. About 14 days see rain.

rain geara warm layersun protection

Sea temperature near Susono in April

The nearest coast averages about 17°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 21 km away) is warmest in August at about 26°C and coldest in February near 15°C.

It's comfortable for a long swim from May 31 to Nov 26 — about 5.9 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan16Cool
Feb15Cool
Mar16Cool
Apr17Cool
May19Cool
Jun21Refreshing
Jul24Refreshing
Aug26Warm
Sep25Warm
Oct23Refreshing
Nov21Refreshing
Dec18Cool

UV index in Susono 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 Susono peaks around July 19 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 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 highExtremeVery highModerateJul 19UV 10Dec 23UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5Moderate
Apr7High
May9Very high
Jun10Very high
Jul10Extreme
Aug10Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec2Moderate

Air quality in Susono 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 Susono is worst in April — around 23 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (December, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1623 µg/m³Dec 1610 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb20Moderate
Mar20Moderate
Apr23Moderate
May20Moderate
Jun17Moderate
Jul13Moderate
Aug12Good
Sep12Good
Oct12Good
Nov11Good
Dec10Good
Location & terrain

Where is Susono?

Susono sits at 35.2°N, 138.9°E, 133 m above sea level, in Japan. The nearest listed city is Nakatogari, 4.0 km away.

Topography around Susono

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

Within 3 km, the terrain around Susono has significant variations in elevation — a maximum elevation change of 277 m around an average of 169 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,497 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,736 m.

The land around Susono is covered by trees (52%) and artificial surfaces (36%) within 3 km, trees (62%) within 16 km, and trees (48%) and water (38%) within 80 km.

3 km
277 m
16 km
1,497 m
80 km
3,736 m
treesgrasslandcroplandartificial surfaceswater
April weather nearby: Nakatogari 4.0 km · Mishima 6.0 km · Fushimi 7.0 km · Numazu 9.0 km · Kamizawa 9.0 km · Hakone 11 km · Yugawara 15 km · Izunokuni 16 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 Susono (35.1739°, 138.9069°, elevation 133 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).