Tome weather in May

In May, Tome sees average daytime highs of 20°C and overnight lows near 11°C, with 98 mm of rain across 10.4 wet days and about 14.1 hours of daylight. It is the 5th-warmest and 6th-wettest month of the year here.

Highs climb over the month, from about 18°C in the first days to 22°C by the end. The sky is clear or mostly clear about 26% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 36 min at the start of May to 14 h 30 min by month's end. Set against the rest of the year, May is Tome's 8th-clearest and 7th-windiest month. For the whole year in context, see Tome's year-round climate.

Daytime high
20°
5th warmest
Overnight low
11°
8th coldest
Rainfall
98 mm
10.4 wet days
Daylight
14 h 06 min
4:29 AM – 6:35 PM
Cloud cover
67%
8th clearest
Wind
10 km/h
7th windiest
Solar energy
5.42 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 18°C in the first days to 22°C by the end.

A typical May day in Tome reaches about 20°C in the afternoon and slips back to 11°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 25°C. Set against its neighbours, May runs about 5°C warmer than April and about 3°C cooler than June.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
1189
2189
3189
4189
51910
61910
71910
81910
91910
101910
111911
121911
131911
142011
152011
162011
172012
182012
192012
202012
212112
222112
232112
242113
252113
262113
272113
282113
292213
302213
312214

How May really feels in Tome

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.

Tome 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°477.14.39.60.0
Feb / -1°427.33.810.50.4
Mar10° / 8310.3311.72.1
Apr15° / 8810.70.5134.5
May20° / 11°9810.4014.16.1
Jun23° / 16°11111.2014.76.2
Jul26° / 20°15615.1014.45.5
Aug28° / 21°13513.6013.55.3
Sep25° / 18°14512.4012.36.1
Oct19° / 11°1269.30116.2
Nov13° / 587.60.29.93.9
Dec / 528.22.79.31.1

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 13% of May, with mostly cloudy or overcast conditions the remaining 61%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14258
24258
34159
44159
54060
63961
73961
83862
93961
103961
113862
123763
133763
143862
153862
163862
173862
183862
193862
203862
213961
223961
233961
243961
254060
264060
274060
283961
293961
304060
313961

Chance of precipitation in May

Any precipitation

Tome gets around 98 mm of rain over 10.4 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 33% and peaks near 35% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
133
233
333
433
533
633
733
833
933
1034
1134
1234
1334
1435
1535
1635
1735
1834
1934
2034
2134
2233
2333
2433
2532
2632
2732
2831
2931
3031
3131

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 80% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19370
29370
39280
49280
59190
69190
79190
890100
990100
1090100
1189110
1288111
1387121
1487121
1586131
1685141
1784151
1883161
1980182
2079192
2177203
2275223
2373234
2472244
2569265
2667276
2765296
2863307
2961318
3058339
31563410

Wind in May

Winds average 10 km/h in May.

Across May, daily wind ranges from about 9 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 36 min at the start of May to 14 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 54 minutes over May. Sunrise moves from 4:45 AM to 4:18 AM, and sunset from 6:20 PM to 6:47 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.64:456:20
213.64:436:21
313.74:426:22
413.74:416:23
513.74:406:24
613.84:396:25
713.84:386:26
813.84:376:27
913.94:356:28
1013.94:346:29
1113.94:336:30
1214.04:326:31
1314.04:316:32
1414.04:306:33
1514.14:296:34
1614.14:296:35
1714.14:286:36
1814.24:276:36
1914.24:266:37
2014.24:256:38
2114.24:246:39
2214.34:246:40
2314.34:236:41
2414.34:226:42
2514.34:226:42
2614.44:216:43
2714.44:206:44
2814.44:206:45
2914.44:196:46
3014.54:196:46
3114.54:186:47

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.42 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.07 kWh/m² to a high of 5.42 kWh/m² in May across the year — May's 5.42 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
135.4Bright
145.4Bright
155.4Bright
165.4Bright
175.4Bright
185.4Bright
195.4Bright
205.5Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.5Bright
265.6Bright
275.6Bright
285.6Bright
295.6Bright
305.6Bright
315.6Bright
Planning a trip in May

Hazard calendar for Tome

In seasonPeak

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

Tome 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 Tome?

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

6.1
Sightseeing
3rd-best month of the year
3.2
Beach & pool
5th-best month of the year

May is a reasonable time to visit Tome for sightseeing.

What to pack for Tome in May

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

In May, Tome sees daytime highs around 20°C and nights near 11°C. Worth packing: rain gear and sun protection. About 10 days see rain.

rain gearsun protection

Sea temperature near Tome in May

The nearest coast averages about 13°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 42 km away) is warmest in August at about 23°C and coldest in March near 8°C.

It's comfortable for a long swim from Jul 10 to Oct 8 — about 3 months when the water holds above 20°C.

5°10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan11Bracing
Feb9Bracing
Mar8Bracing
Apr10Bracing
May13Bracing
Jun17Cool
Jul21Refreshing
Aug23Refreshing
Sep22Refreshing
Oct19Cool
Nov16Cool
Dec14Bracing

UV index in Tome in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Tome peaks around August 18 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highVery highModerateLowAug 18UV 9Jan 1UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun8Very high
Jul6High
Aug9Very high
Sep8Very high
Oct5Moderate
Nov3Moderate
Dec2Low

Air quality in Tome 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 Tome is worst in April — around 20 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (December, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1620 µg/m³Dec 1710 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb14Moderate
Mar19Moderate
Apr20Moderate
May19Moderate
Jun14Moderate
Jul12Moderate
Aug11Good
Sep11Good
Oct11Good
Nov11Good
Dec9Good
Location & terrain

Where is Tome?

Tome sits at 38.7°N, 141.2°E, 6 m above sea level, in Japan. The nearest listed city is Kurihara, 14 km away.

Topography around Tome

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

Within 3 km, the terrain around Tome has only modest variations in elevation — a maximum elevation change of 51 m around an average of 10 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 366 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,619 m.

The land around Tome is covered by cropland (52%) and trees (21%) within 3 km, trees (43%) and cropland (43%) within 16 km, and trees (57%) and water (28%) within 80 km.

3 km
51 m
16 km
366 m
80 km
1,619 m
treesgrasslandcroplandartificial surfaceswaterwetland
May weather nearby: Kurihara 14 km · Wakuya 18 km · Kogota 20 km · Ōsaki 21 km · Kogota-ekimae 21 km · Furukawa 23 km · Ichinoseki 23 km · Naka-niida 31 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 Tome (38.7088°, 141.1558°, elevation 6 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).