Wadayama weather in May

In May, Wadayama sees average daytime highs of 21°C and overnight lows near 12°C, with 168 mm of rain across 12.4 wet days and about 13.8 hours of daylight. It is the 5th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 20°C in the first days to 23°C by the end. The sky is clear or mostly clear about 24% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 24 min at the start of May to 14 h 12 min by month's end. Set against the rest of the year, May is Wadayama's 6th-clearest and 4th-windiest month. For the whole year in context, see Wadayama's year-round climate.

Daytime high
21°
5th warmest
Overnight low
12°
8th coldest
Rainfall
168 mm
12.4 wet days
Daylight
13 h 54 min
5:01 AM – 6:52 PM
Cloud cover
67%
6th clearest
Wind
9 km/h
4th windiest
Solar energy
5.49 kWh/m²
Travel score
6.1
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 20°C in the first days to 23°C by the end.

A typical May day in Wadayama reaches about 21°C in the afternoon and slips back to 12°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 25°C. Set against its neighbours, May runs about 5°C warmer than April and about 3°C cooler than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
11910
22010
32010
42010
52010
62011
72011
82011
92011
102111
112111
122111
132112
142112
152112
162112
172112
182212
192212
202213
212213
222213
232213
242213
252213
262213
272314
282314
292314
302314
312314

How May really feels in Wadayama

Once humidity and wind are folded in, May 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

May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Wadayama weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -2°7514.110.19.90.2
Feb / -2°8113.17.910.70.6
Mar11° / 13214.43.911.72.3
Apr17° / 13911.90.412.94.9
May21° / 12°16812.4013.86.1
Jun24° / 17°22215.9014.35.5
Jul28° / 21°27218.9014.14.5
Aug29° / 22°19317.3013.34.4
Sep25° / 18°25515.3012.25.7
Oct20° / 12°15710.9011.16.0
Nov14° / 8910.20.210.14.1
Dec / 8112.24.89.71.5

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 12% of May, with mostly cloudy or overcast conditions the remaining 64%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14357
24357
34258
44258
54159
64060
74060
83961
93763
103763
113664
123664
133565
143565
153565
163565
173565
183466
193565
203466
213466
223466
233466
243367
253367
263268
273268
283169
293169
302971
312872

Chance of precipitation in May

Any precipitation

Wadayama gets around 168 mm of rain over 12.4 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 39% and peaks near 41% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
140
240
340
440
540
640
740
841
941
1041
1141
1241
1341
1440
1540
1640
1739
1839
1939
2039
2138
2238
2338
2438
2538
2638
2738
2838
2938
3039
3139

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

Most of May feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, May lands in the dry band about 70% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1841330
2841330
3831430
4821440
5811540
6801550
7791551
8781651
9771661
10771661
11761761
12751771
13751771
14741871
15741871
16731971
17712081
18712081
19702181
20692281
21662491
22652591
23642691
246227101
256029101
265830111
275631121
285333131
295034142
304836152
314637162

Wind in May

Winds average 9 km/h in May.

Across May, daily wind ranges from about 8 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
298calm
308calm
318calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 24 min at the start of May to 14 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over May. Sunrise moves from 5:15 AM to 4:52 AM, and sunset from 6:40 PM to 7:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.45:156:40
213.45:146:41
313.55:136:42
413.55:126:42
513.55:116:43
613.65:106:44
713.65:096:45
813.65:086:46
913.75:076:47
1013.75:066:47
1113.75:056:48
1213.75:056:49
1313.85:046:50
1413.85:036:51
1513.85:026:52
1613.95:016:52
1713.95:006:53
1813.95:006:54
1913.94:596:55
2014.04:586:56
2114.04:586:56
2214.04:576:57
2314.04:566:58
2414.04:566:59
2514.14:556:59
2614.14:557:00
2714.14:547:01
2814.14:547:01
2914.14:537:02
3014.24:537:03
3114.24:527:03

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.49 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.16 kWh/m² to a high of 5.49 kWh/m² in May across the year — May's 5.49 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.4Bright
45.4Bright
55.4Bright
65.4Bright
75.4Bright
85.4Bright
95.4Bright
105.4Bright
115.4Bright
125.4Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.5Bright
205.6Bright
215.6Bright
225.6Bright
235.6Bright
245.6Bright
255.6Bright
265.6Bright
275.6Bright
285.6Bright
295.5Bright
305.5Bright
315.5Bright
Planning a trip in May

Hazard calendar for Wadayama

In seasonPeak

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

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

Wadayama's rainy season runs March–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 May a good time to visit Wadayama?

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

6.1
Sightseeing
1st-best month of the year
3.8
Beach & pool
5th-best month of the year

May is a reasonable time to visit Wadayama for sightseeing.

What to pack for Wadayama in May

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

In May, Wadayama sees daytime highs around 21°C and nights near 12°C. Worth packing: rain gear and sun protection. About 12 days see rain.

rain gearsun protection

Sea temperature near Wadayama in May

The nearest coast averages about 17°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 34 km away) is warmest in August at about 27°C and coldest in March near 12°C.

It's comfortable for a long swim from Jun 13 to Nov 7 — about 4.9 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb12Bracing
Mar12Bracing
Apr14Bracing
May17Cool
Jun20Refreshing
Jul24Warm
Aug27Warm
Sep25Warm
Oct22Refreshing
Nov19Cool
Dec16Cool

UV index in Wadayama in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May 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 Wadayama 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
Mar5High
Apr7High
May8Very high
Jun10Very high
Jul10Extreme
Aug9Very high
Sep9Very high
Oct6High
Nov3Moderate
Dec3Moderate

Air quality in Wadayama in May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May falls, not just the annual average.

Air quality in Wadayama is worst in April — around 22 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (October, 11 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1622 µg/m³Oct 1811 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb16Moderate
Mar21Moderate
Apr22Moderate
May21Moderate
Jun18Moderate
Jul17Moderate
Aug17Moderate
Sep13Moderate
Oct11Good
Nov12Moderate
Dec12Good
Location & terrain

Where is Wadayama?

Wadayama sits at 35.3°N, 134.9°E, 180 m above sea level, in Japan. The nearest listed city is Yabu, 13 km away.

Topography around Wadayama

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

Within 3 km, the terrain around Wadayama has significant variations in elevation — a maximum elevation change of 435 m around an average of 174 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,039 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,487 m.

The land around Wadayama is covered by trees (69%) within 3 km, trees (92%) within 16 km, and trees (61%) and water (29%) within 80 km.

3 km
435 m
16 km
1,039 m
80 km
1,487 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Yabu 13 km · Tamba 22 km · Fukuchiyama 23 km · Tanba 23 km · Toyooka 25 km · Kajiya 28 km · Yotsutsuji 32 km · Ayabe 35 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 Wadayama (35.3167°, 134.8667°, elevation 180 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).