Uki weather in April

In April, Uki sees average daytime highs of 18°C and overnight lows near 10°C, with 170 mm of rain across 12.3 wet days and about 12.8 hours of daylight. It is the 7th-warmest and 6th-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 30% 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 12 min by month's end. Set against the rest of the year, April is Uki's 7th-clearest and 4th-windiest month. For the whole year in context, see Uki's year-round climate.

Daytime high
18°
7th warmest
Overnight low
10°
6th coldest
Rainfall
170 mm
12.3 wet days
Daylight
12 h 48 min
5:53 AM – 6:42 PM
Cloud cover
62%
7th clearest
Wind
8 km/h
4th windiest
Solar energy
4.89 kWh/m²
Travel score
5.3
out of 10

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 Uki reaches about 18°C in the afternoon and slips back to 10°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 22°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)
1168
2168
3168
4169
5169
6169
7179
8179
9179
101710
111710
121710
131810
141810
151810
161811
171811
181811
191811
201911
211911
221911
231912
241912
251912
262012
272012
282012
292013
302013

How April really feels in Uki

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.

Uki weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 8210.53.210.11.3
Feb / 10210.52.210.81.9
Mar13° / 15113.60.611.83.4
Apr18° / 10°17012.3012.85.3
May22° / 15°19312.5013.76.1
Jun24° / 19°46419.1014.15.1
Jul28° / 23°35819.8013.94.5
Aug29° / 23°17116.9013.24.5
Sep26° / 20°18314.3012.25.9
Oct22° / 14°1089011.26.9
Nov16° / 988.8010.35.2
Dec10° / 86101.49.92.5

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 11% of April, with mostly cloudy or overcast conditions the remaining 58%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14555
24654
34555
44555
54456
64456
74456
84357
94258
104258
114060
124060
134060
144060
153961
164060
173961
183961
194060
204060
214060
224060
234159
244159
254159
264159
274060
284060
294060
304060

Chance of precipitation in April

Any precipitation

Uki gets around 170 mm of rain 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 rain averages around 42% and peaks near 43% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
142
241
341
441
540
640
740
840
940
1041
1141
1241
1342
1442
1543
1643
1743
1843
1943
2043
2143
2243
2343
2442
2542
2642
2742
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 80% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
191720
291720
389830
489830
588930
688930
787940
8861040
9861040
10851140
11851140
12851140
13841240
14831340
15831340
16811450
17811450
18801550
19801550
20781651
21781651
22761761
23751861
24731971
25721981
26712081
27682192
286721102
296621112
306422122

Wind in April

Winds average 8 km/h in April.

Across April, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
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 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 54 minutes over April. Sunrise moves from 6:13 AM to 5:37 AM, and sunset from 6:31 PM to 6:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:136:31
212.36:126:32
312.46:106:32
412.46:096:33
512.46:086:34
612.56:066:35
712.56:056:35
812.56:046:36
912.66:026:37
1012.66:016:37
1112.66:006:38
1212.75:586:39
1312.75:576:40
1412.75:566:40
1512.85:556:41
1612.85:536:42
1712.85:526:42
1812.95:516:43
1912.95:506:44
2012.95:496:45
2113.05:476:45
2213.05:466:46
2313.05:456:47
2413.15:446:48
2513.15:436:48
2613.15:426:49
2713.25:416:50
2813.25:406:50
2913.25:396:51
3013.25:376:52

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 4.89 kWh/m².

For context, solar energy here swings from a low near 2.37 kWh/m² to a high of 5.09 kWh/m² in May across the year — April's 4.89 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
14.5Bright
24.6Bright
34.6Bright
44.6Bright
54.6Bright
64.7Bright
74.7Bright
84.7Bright
94.7Bright
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
245.0Bright
255.0Bright
265.0Bright
275.0Bright
285.1Bright
295.1Bright
305.1Bright
Planning a trip in April

Hazard calendar for Uki

In seasonPeak

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

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

Uki's rainy season runs June–July, 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 Uki?

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

5.3
Sightseeing
4th-best month of the year
1.8
Beach & pool
7th-best month of the year

April is a reasonable time to visit Uki for sightseeing.

What to pack for Uki in April

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

In April, Uki sees daytime highs around 18°C and nights near 10°C. Worth packing: rain gear and sun protection. About 12 days see rain.

rain gearsun protection

Sea temperature near Uki 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 27 km away) is warmest in August at about 27°C and coldest in February near 14°C.

It's comfortable for a long swim from May 26 to Nov 19 — about 5.9 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Cool
Feb14Bracing
Mar15Bracing
Apr17Cool
May19Cool
Jun22Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct23Refreshing
Nov20Refreshing
Dec18Cool

UV index in Uki in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Uki peaks around June 22 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 — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highModerateJun 22UV 10Dec 21UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr8Very high
May8Very high
Jun10Extreme
Jul10Extreme
Aug9Very high
Sep10Very high
Oct7High
Nov4Moderate
Dec3Moderate

Air quality in Uki 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 Uki is worst in March — around 24 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (July, 13 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 2424 µg/m³Jul 2114 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb20Moderate
Mar24Moderate
Apr24Moderate
May22Moderate
Jun18Moderate
Jul13Moderate
Aug14Moderate
Sep14Moderate
Oct14Moderate
Nov16Moderate
Dec15Moderate
Location & terrain

Where is Uki?

Uki sits at 32.6°N, 130.7°E, 0 m above sea level, in Japan. The nearest listed city is Matsubase, 3.0 km away.

Topography around Uki

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

Within 3 km, the terrain around Uki has only modest variations in elevation — a maximum elevation change of 98 m around an average of 3 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 861 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,757 m.

The land around Uki is covered by cropland (54%) within 3 km, trees (42%), cropland (22%) and water (20%) within 16 km, and trees (65%) and water (21%) within 80 km.

3 km
98 m
16 km
861 m
80 km
1,757 m
treesgrasslandcroplandartificial surfaceswater
April weather nearby: Matsubase 3.0 km · Uto 7.0 km · Honmachi 14 km · Mifune 18 km · Kotō 19 km · Shimada 19 km · Kumamoto 21 km · Ōyanomachi-noboritate 22 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 Uki (32.6222°, 130.6618°, elevation 0 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).