Tōbetsu weather in May

In May, Tōbetsu sees average daytime highs of 16°C and overnight lows near 8°C, with 85 mm of precipitation across 11.4 wet days and about 14.4 hours of daylight. It is the 5th-warmest and 6th-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 29% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 54 min at the start of May to 14 h 54 min by month's end. Set against the rest of the year, May is Tōbetsu's 4th-clearest and 8th-windiest month. For the whole year in context, see Tōbetsu's year-round climate.

Daytime high
16°
5th warmest
Overnight low
7th coldest
Precipitation
85 mm
11.4 wet days
Daylight
14 h 30 min
4:16 AM – 6:44 PM
Cloud cover
63%
4th clearest
Wind
11 km/h
8th windiest
Solar energy
5.43 kWh/m²
Travel score
4.7
out of 10

Tōbetsu is town in Ishikari District, Hokkaido, Japan.

Density
39/km²
people per km²
Founded
1947

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in May

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 May day in Tōbetsu 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 20°C. Set against its neighbours, May runs about 6°C warmer than April and about 4°C cooler than June.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
1145
2145
3145
4146
5146
6146
7146
8156
9157
10157
11157
12157
13157
14157
15168
16168
17168
18168
19168
20169
21169
22179
23179
24179
25179
261710
271710
281710
291810
301810
311810

How May really feels in Tōbetsu

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.

Tōbetsu weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-2° / -8°5313.819.79.20.0
Feb-1° / -8°4511.616.610.20.0
Mar / -4°5811.611.411.60.0
Apr10° / 6511.1313.22.2
May16° / 8511.40.114.44.7
Jun19° / 13°7510.1015.16.0
Jul23° / 17°12612.5014.96.3
Aug24° / 19°17113.7013.86.2
Sep21° / 14°13613.7012.35.8
Oct15° / 9413.50.210.84.2
Nov / 9317.18.39.51.0
Dec / -5°7616.519.78.90.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% 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 58%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14357
24357
34258
44258
54159
64258
74159
84159
94060
104159
114060
124159
134159
144159
154159
164258
174258
184258
194258
204258
214258
224258
234258
244357
254357
264258
274258
284357
294357
304357
314258

Chance of precipitation in May

Any precipitationSnow

Tōbetsu gets around 85 mm of rain and snow over 11.4 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 37% and peaks near 39% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1392
2391
3391
4391
5391
6391
7391
8391
9391
10391
11391
12380
13380
14370
15370
16370
17360
18360
19360
20360
21360
22360
23350
24350
25360
26360
27360
28360
29360
30370
31360

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 98% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
11000
21000
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
151000
161000
17991
18991
19991
20991
21982
22982
23973
24964
25964
26955
27946
28937
29928
30919
319010

Wind in May

Winds average 11 km/h in May.

Across May, daily wind ranges from about 10 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112calm
212calm
312calm
412calm
512calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 54 min at the start of May to 14 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 60 minutes over May. Sunrise moves from 4:35 AM to 4:03 AM, and sunset from 6:27 PM to 6:59 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.94:356:27
213.94:336:29
314.04:326:30
414.04:316:31
514.04:296:32
614.14:286:33
714.14:276:34
814.24:256:36
914.24:246:37
1014.34:236:38
1114.34:226:39
1214.34:206:40
1314.44:196:41
1414.44:186:42
1514.44:176:43
1614.54:166:44
1714.54:156:46
1814.54:146:47
1914.64:136:48
2014.64:126:49
2114.64:116:50
2214.74:106:51
2314.74:096:52
2414.74:086:53
2514.84:086:54
2614.84:076:55
2714.84:066:56
2814.94:056:57
2914.94:056:57
3014.94:046:58
3114.94:036:59

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.43 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 1.58 kWh/m² to a high of 5.43 kWh/m² in May across the year — May's 5.43 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.3Bright
95.3Bright
105.3Bright
115.3Bright
125.3Bright
135.4Bright
145.4Bright
155.4Bright
165.4Bright
175.4Bright
185.4Bright
195.4Bright
205.5Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.5Bright
265.5Bright
275.6Bright
285.6Bright
295.6Bright
305.6Bright
315.6Bright
Planning a trip in May

Hazard calendar for Tōbetsu

In seasonPeak

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

Tōbetsu 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 Tōbetsu?

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

4.7
Sightseeing
5th-best month of the year
0.6
Beach & pool
5th-best month of the year

May is a reasonable time to visit Tōbetsu for sightseeing.

What to pack for Tōbetsu in May

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

In May, Tōbetsu sees daytime highs around 16°C and nights near 8°C. Worth packing: a warm layer, rain gear and sun protection. About 11 days see rain.

a warm layerrain gearsun protection

Sea temperature near Tōbetsu in May

The nearest coast averages about 10°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 21 km away) is warmest in August at about 22°C and coldest in February near 5°C.

It's comfortable for a long swim from Jul 31 to Sep 22 — about 1.8 months when the water holds above 20°C.

10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan7Bracing
Feb5Bracing
Mar5Bracing
Apr7Bracing
May10Bracing
Jun14Bracing
Jul19Cool
Aug22Refreshing
Sep21Refreshing
Oct17Cool
Nov13Bracing
Dec9Bracing

UV index in Tōbetsu in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May 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 Tōbetsu peaks around August 18 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighHighVery highHighModerateLowAug 18UV 8Dec 19UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar3Moderate
Apr6High
May7Very high
Jun7High
Jul5Moderate
Aug8Very high
Sep6High
Oct4Moderate
Nov2Low
Dec1Low

Air quality in Tōbetsu 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 Tōbetsu is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (December, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1220 µg/m³Dec 159 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb15Moderate
Mar20Moderate
Apr21Moderate
May19Moderate
Jun14Moderate
Jul13Moderate
Aug11Good
Sep11Good
Oct12Good
Nov10Good
Dec9Good
Location & terrain

Where is Tōbetsu?

Tōbetsu sits at 43.2°N, 141.5°E, 14 m above sea level, in Japan. The nearest listed city is Ebetsu, 12 km away.

Topography around Tōbetsu

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

Within 3 km, the terrain around Tōbetsu has only modest variations in elevation — a maximum elevation change of 76 m around an average of 15 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 414 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,859 m.

The land around Tōbetsu is covered by cropland (72%) within 3 km, cropland (48%) and trees (28%) within 16 km, and trees (60%) and water (22%) within 80 km.

3 km
76 m
16 km
414 m
80 km
1,859 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Ebetsu 12 km · Ishikari 13 km · Iwamizawa 20 km · Sapporo 22 km · Kitahiroshima 27 km · Bibai 30 km · Eniwa 36 km · Otaru 42 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 Tōbetsu (43.2169°, 141.5169°, elevation 14 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).