Sakaidechō weather in April

In April, Sakaidechō sees average daytime highs of 18°C and overnight lows near 12°C, with 110 mm of rain across 10.6 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 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 18 min by month's end. Set against the rest of the year, April is Sakaidechō's 5th-clearest and 7th-windiest month. For the whole year in context, see Sakaidechō's year-round climate.

Daytime high
18°
7th warmest
Overnight low
12°
6th coldest
Rainfall
110 mm
10.6 wet days
Daylight
12 h 54 min
5:39 AM – 6:31 PM
Cloud cover
58%
5th clearest
Wind
10 km/h
7th windiest
Solar energy
5.21 kWh/m²
Travel score
5.6
out of 10

Sakaidechō is city in Kagawa Prefecture, Japan.

Density
617/km²
people per km²
Founded
1942

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 Sakaidechō reaches about 18°C in the afternoon and slips back to 12°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 14°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)
1159
2159
31610
41610
51610
61610
71610
81610
91711
101711
111711
121711
131711
141711
151812
161812
171812
181812
191812
201812
211913
221913
231913
241913
251913
261913
271914
282014
292014
302014

How April really feels in Sakaidechō

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.

Sakaidechō 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 / 599.91.6101.9
Feb10° / 649.51.510.72.2
Mar13° / 10211.50.311.73.5
Apr18° / 12°11010.6012.85.6
May22° / 16°13010.3013.86.5
Jun25° / 20°19113014.26.0
Jul29° / 24°17712.5014.15.2
Aug30° / 25°1069.7013.35.0
Sep27° / 22°16811.6012.26.1
Oct22° / 17°1349.5011.16.9
Nov17° / 11°688.1010.25.5
Dec12° / 6710.119.73.0

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 51%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15248
25248
35149
45149
55149
65149
75149
85050
95050
104951
114951
124951
134852
144852
154852
164753
174852
184753
194753
204753
214753
224753
234852
244951
254951
264951
274951
284951
294951
304951

Chance of precipitation in April

Any precipitation

Sakaidechō gets around 110 mm of rain over 10.6 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 35% and peaks near 37% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
136
236
336
435
535
635
735
835
935
1036
1136
1236
1336
1436
1537
1637
1737
1837
1937
2036
2136
2236
2335
2435
2534
2634
2733
2833
2932
3032

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 81% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
193610
292710
391810
490910
590910
6891010
7891010
8891010
9881110
10881110
11861220
12861220
13851320
14841420
15841420
16831520
17821530
18811630
19811630
20791740
21781840
22761950
23742051
24712261
25702361
26682471
27672481
28662581
29642691
306227101

Wind in April

Winds average 10 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
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
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 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 60 minutes over April. Sunrise moves from 6:00 AM to 5:22 AM, and sunset from 6:19 PM to 6:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:006:19
212.45:586:20
312.45:576:20
412.45:556:21
512.55:546:22
612.55:536:23
712.55:516:24
812.65:506:24
912.65:496:25
1012.65:476:26
1112.75:466:27
1212.75:446:27
1312.85:436:28
1412.85:426:29
1512.85:406:30
1612.95:396:31
1712.95:386:31
1812.95:376:32
1913.05:356:33
2013.05:346:34
2113.05:336:35
2213.15:326:35
2313.15:306:36
2413.15:296:37
2513.25:286:38
2613.25:276:39
2713.25:266:39
2813.35:246:40
2913.35:236:41
3013.35:226:42

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.21 kWh/m².

For context, solar energy here swings from a low near 2.35 kWh/m² to a high of 5.54 kWh/m² in May across the year — April's 5.21 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
14.8Bright
24.9Bright
34.9Bright
44.9Bright
55.0Bright
65.0Bright
75.0Bright
85.0Bright
95.0Bright
105.1Bright
115.1Bright
125.1Bright
135.1Bright
145.2Bright
155.2Bright
165.2Bright
175.2Bright
185.3Bright
195.3Bright
205.3Bright
215.3Bright
225.3Bright
235.3Bright
245.4Bright
255.4Bright
265.4Bright
275.4Bright
285.4Bright
295.5Bright
305.5Bright
Planning a trip in April

Hazard calendar for Sakaidechō

In seasonPeak

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

Sakaidechō 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 Sakaidechō?

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

5.6
Sightseeing
5th-best month of the year
1.7
Beach & pool
7th-best month of the year

April is a reasonable time to visit Sakaidechō for sightseeing.

What to pack for Sakaidechō in April

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

In April, Sakaidechō sees daytime highs around 18°C and nights near 12°C. Worth packing: rain gear and sun protection. About 11 days see rain.

rain gearsun protection

Sea temperature near Sakaidechō 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 20 km away) is warmest in August at about 28°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 3 to Nov 12 — 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
Mar13Bracing
Apr15Bracing
May18Cool
Jun22Refreshing
Jul25Warm
Aug28Warm
Sep27Warm
Oct23Refreshing
Nov20Cool
Dec16Cool

UV index in Sakaidechō 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 Sakaidechō peaks around June 22 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 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 highModerateJun 22UV 10Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5High
Apr7Very high
May8Very high
Jun10Very high
Jul10Very high
Aug9Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Sakaidechō 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 Sakaidechō is worst in April — around 24 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (December, 14 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1324 µg/m³Dec 1414 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb19Moderate
Mar23Moderate
Apr24Moderate
May22Moderate
Jun20Moderate
Jul17Moderate
Aug17Moderate
Sep16Moderate
Oct14Moderate
Nov15Moderate
Dec14Moderate
Location & terrain

Where is Sakaidechō?

Sakaidechō sits at 34.3°N, 133.8°E, 11 m above sea level, in Japan. The nearest listed city is Utazu, 3.0 km away.

Topography around Sakaidechō

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

Within 3 km, the terrain around Sakaidechō has only modest variations in elevation — a maximum elevation change of 228 m around an average of 10 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 618 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,946 m.

The land around Sakaidechō is covered by artificial surfaces (48%) and water (34%) within 3 km, water (46%) and trees (25%) within 16 km, and trees (59%) and water (29%) within 80 km.

3 km
228 m
16 km
618 m
80 km
1,946 m
treesgrasslandcroplandartificial surfacesbare terrainwater
April weather nearby: Utazu 3.0 km · Marugame 7.0 km · Tadotsu 9.0 km · Takinomiya 12 km · Zentsujichó 12 km · Shioiri 19 km · Mitoyo 19 km · Takamatsu 20 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 Sakaidechō (34.3228°, 133.8356°, elevation 11 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).