Mito weather in May

In May, Mito sees average daytime highs of 20°C and overnight lows near 15°C, with 148 mm of rain across 12.6 wet days and about 13.9 hours of daylight. It is the 6th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 18°C in the first days to 21°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 30 min at the start of May to 14 h 18 min by month's end. Set against the rest of the year, May is Mito's 10th-clearest and 8th-windiest month. For the whole year in context, see Mito's year-round climate.

Daytime high
20°
6th warmest
Overnight low
15°
7th coldest
Rainfall
148 mm
12.6 wet days
Daylight
13 h 54 min
4:37 AM – 6:32 PM
Cloud cover
68%
10th clearest
Wind
13 km/h
8th windiest
Solar energy
5.38 kWh/m²
Travel score
5.8
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 18°C in the first days to 21°C by the end.

A typical May day in Mito reaches about 20°C in the afternoon and slips back to 15°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 23°C. Set against its neighbours, May runs about 4°C warmer than April and about 3°C cooler than June.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
11813
21813
31813
41913
51913
61913
71914
81914
91914
101914
111914
121914
131914
142014
152015
162015
172015
182015
192015
202015
212015
222015
232016
242116
252116
262116
272116
282116
292116
302116
312117

How May really feels in Mito

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.

Mito weather by month

How May compares with the rest of the year at a glance. May is the 6th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 737.61.39.81.7
Feb / 718.11.610.61.8
Mar12° / 126130.911.72.9
Apr16° / 10°12412.40.112.94.7
May20° / 15°14812.6013.95.8
Jun23° / 18°15914.1014.45.7
Jul26° / 22°16214.9014.25.7
Aug28° / 23°11112.1013.46.0
Sep25° / 21°17614.1012.26.0
Oct20° / 16°21313.5011.15.8
Nov16° / 11°10610.5010.14.8
Dec11° / 718.60.29.62.9

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 14% of May, with mostly cloudy or overcast conditions the remaining 62%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14555
24555
34357
44357
54258
64159
74060
83961
93961
103961
113862
123862
133862
143862
153862
163862
173763
183763
193763
203763
213763
223763
233664
243664
253565
263565
273664
283565
293466
303466
313268

Chance of precipitation in May

Any precipitation

Mito gets around 148 mm of rain over 12.6 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 40% and peaks near 42% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
139
239
338
438
538
638
739
839
939
1040
1140
1241
1341
1441
1542
1642
1742
1842
1942
2042
2142
2242
2341
2441
2540
2640
2739
2838
2938
3038
3138

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 44% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1712450
2682660
3672760
4662860
5633070
6613180
7603280
8583390
95634100
105535100
115236111
125037121
134937131
144838131
154639141
164440161
174240171
184041181
193941191
203741211
213541221
223341241
233241262
243041272
252941292
262740302
272640323
282439333
292339353
302138374
312038385

Wind in May

Winds average 13 km/h in May.

Across May, daily wind ranges from about 12 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 30 min at the start of May to 14 h 18 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 4:52 AM to 4:27 AM, and sunset from 6:19 PM to 6:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.54:526:19
213.54:506:20
313.54:496:21
413.64:486:22
513.64:476:23
613.64:466:24
713.74:456:25
813.74:446:25
913.74:436:26
1013.84:426:27
1113.84:416:28
1213.84:406:29
1313.84:396:30
1413.94:386:31
1513.94:376:31
1613.94:376:32
1714.04:366:33
1814.04:356:34
1914.04:346:35
2014.04:346:35
2114.14:336:36
2214.14:326:37
2314.14:326:38
2414.14:316:39
2514.14:306:39
2614.24:306:40
2714.24:296:41
2814.24:296:42
2914.24:286:42
3014.34:286:43
3114.34:276:44

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.38 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.35 kWh/m² to a high of 5.38 kWh/m² in May across the year — May's 5.38 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.4Bright
35.4Bright
45.4Bright
55.4Bright
65.4Bright
75.3Bright
85.3Bright
95.3Bright
105.3Bright
115.3Bright
125.3Bright
135.3Bright
145.3Bright
155.3Bright
165.3Bright
175.4Bright
185.4Bright
195.4Bright
205.4Bright
215.4Bright
225.4Bright
235.5Bright
245.5Bright
255.5Bright
265.5Bright
275.5Bright
285.5Bright
295.5Bright
305.5Bright
315.4Bright
Planning a trip in May

Hazard calendar for Mito

In seasonPeak

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

Mito 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 May a good time to visit Mito?

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

5.8
Sightseeing
3rd-best month of the year
2.9
Beach & pool
6th-best month of the year

May is a reasonable time to visit Mito for sightseeing.

What to pack for Mito in May

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

In May, Mito sees daytime highs around 20°C and nights near 15°C. Worth packing: rain gear and sun protection. About 13 days see rain.

rain gearsun protection

Sea temperature near Mito 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 16 km away) is warmest in August at about 24°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 24 to Oct 28 — about 4.2 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan15Bracing
Feb13Bracing
Mar13Bracing
Apr15Bracing
May17Cool
Jun19Cool
Jul22Refreshing
Aug24Warm
Sep23Refreshing
Oct21Refreshing
Nov19Cool
Dec16Cool

UV index in Mito 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 Mito peaks around July 24 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 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 highModerateJul 24UV 10Jan 1UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar4Moderate
Apr6High
May8Very high
Jun9Very high
Jul10Very high
Aug10Very high
Sep8Very high
Oct6High
Nov3Moderate
Dec2Moderate

Air quality in Mito 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 Mito is worst in March — around 25 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (December, 14 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 2425 µg/m³Dec 1914 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb18Moderate
Mar25Moderate
Apr25Moderate
May24Moderate
Jun19Moderate
Jul16Moderate
Aug15Moderate
Sep15Moderate
Oct16Moderate
Nov16Moderate
Dec14Moderate
Location & terrain

Where is Mito?

Mito sits at 36.4°N, 140.4°E, 28 m above sea level, in Japan. The nearest listed city is Okunoya, 8.0 km away.

Topography around Mito

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

Within 3 km, the terrain around Mito has only modest variations in elevation — a maximum elevation change of 50 m around an average of 29 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 201 m; within 80 km, large variations in elevation — a maximum elevation change of 1,005 m.

The land around Mito is covered by artificial surfaces (71%) within 3 km, trees (33%), cropland (27%) and artificial surfaces (26%) within 16 km, and trees (38%), water (24%) and cropland (21%) within 80 km.

3 km
50 m
16 km
201 m
80 km
1,005 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Okunoya 8.0 km · Katsuta 8.0 km · Hitachi-Naka 9.0 km · Inada 11 km · Omitama 12 km · Ōarai 13 km · Tomobe 13 km · Ishitsuka 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 Mito (36.35°, 140.45°, elevation 28 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).