Uki weather in May

In May, Uki sees average daytime highs of 22°C and overnight lows near 15°C, with 193 mm of rain across 12.5 wet days and about 13.7 hours of daylight. It is the 5th-warmest and 3rd-wettest month of the year here.

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

Daytime high
22°
5th warmest
Overnight low
15°
8th coldest
Rainfall
193 mm
12.5 wet days
Daylight
13 h 42 min
5:23 AM – 7:04 PM
Cloud cover
68%
10th clearest
Wind
7 km/h
8th windiest
Solar energy
5.09 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 21°C in the first days to 23°C by the end.

A typical May day in Uki reaches about 22°C in the afternoon and slips back to 15°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 25°C. Set against its neighbours, May runs about 4°C warmer than April and about 3°C cooler than June.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12013
22013
32113
42113
52114
62114
72114
82114
92114
102114
112214
122214
132215
142215
152215
162215
172215
182215
192215
202215
212215
222316
232316
242316
252316
262316
272316
282316
292316
302317
312317

How May really feels in Uki

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.

Uki weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 8210.53.210.11.3
Feb / 10210.52.210.81.9
Mar13° / 15113.60.611.83.4
Apr18° / 10°17012.3012.85.3
May22° / 15°19312.5013.76.1
Jun24° / 19°46419.1014.15.1
Jul28° / 23°35819.8013.94.5
Aug29° / 23°17116.9013.24.5
Sep26° / 20°18314.3012.25.9
Oct22° / 14°1089011.26.9
Nov16° / 988.8010.35.2
Dec10° / 86101.49.92.5

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 10% of May, with mostly cloudy or overcast conditions the remaining 66%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14060
23961
33961
43862
53862
63763
73763
83763
93763
103664
113763
123664
133664
143664
153664
163565
173565
183565
193466
203466
213466
223367
233367
243268
253169
263169
273070
283070
292971
302971
312773

Chance of precipitation in May

Any precipitation

Uki gets around 193 mm of rain over 12.5 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 43% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
141
240
340
440
540
640
740
840
940
1040
1140
1240
1340
1439
1539
1639
1739
1838
1938
2039
2139
2239
2339
2439
2540
2640
2741
2841
2942
3042
3143

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. Sticky, muggy-or-worse air turns up on roughly 6% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
164221220
261231330
360231430
459241430
557251530
656251540
754261640
854261640
953271640
1052271650
1151281650
1250291650
1349301650
1448311650
1547321650
1646331650
1745341660
1844351660
1942351760
2041361760
2139371860
2237371960
2336382070
2434382170
2532392270
2630392370
2728392580
2826392680
2924392890
30223830100
31203731111

Wind in May

Winds average 7 km/h in May.

Across May, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
18calm
28calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 18 min at the start of May to 14 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 42 minutes over May. Sunrise moves from 5:36 AM to 5:16 AM, and sunset from 6:53 PM to 7:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.35:366:53
213.35:356:53
313.35:346:54
413.45:336:55
513.45:336:56
613.45:326:56
713.45:316:57
813.55:306:58
913.55:296:59
1013.55:286:59
1113.55:277:00
1213.65:267:01
1313.65:267:02
1413.65:257:02
1513.65:247:03
1613.75:237:04
1713.75:237:04
1813.75:227:05
1913.75:217:06
2013.85:217:07
2113.85:207:07
2213.85:207:08
2313.85:197:09
2413.85:197:09
2513.95:187:10
2613.95:187:11
2713.95:177:11
2813.95:177:12
2913.95:167:13
3014.05:167:13
3114.05:167:14

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.09 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.37 kWh/m² to a high of 5.09 kWh/m² in May across the year — May's 5.09 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.1Bright
45.1Bright
55.1Bright
65.1Bright
75.1Bright
85.0Bright
95.1Bright
105.1Bright
115.1Bright
125.1Bright
135.1Bright
145.1Bright
155.1Bright
165.1Bright
175.1Bright
185.1Bright
195.1Bright
205.1Bright
215.1Bright
225.1Bright
235.1Bright
245.1Bright
255.1Bright
265.1Bright
275.1Bright
285.0Bright
295.0Bright
305.0Bright
314.9Bright
Planning a trip in May

Hazard calendar for Uki

In seasonPeak

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

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

Uki's rainy season runs June–July, 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 Uki?

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

6.1
Sightseeing
2nd-best month of the year
4.2
Beach & pool
6th-best month of the year

May is a reasonable time to visit Uki for sightseeing.

What to pack for Uki in May

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

In May, Uki sees daytime highs around 22°C and nights near 15°C. Worth packing: rain gear and sun protection. About 13 days see rain.

rain gearsun protection

Sea temperature near Uki in May

The nearest coast averages about 19°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 27 km away) is warmest in August at about 27°C and coldest in February near 14°C.

It's comfortable for a long swim from May 26 to Nov 19 — about 5.9 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Cool
Feb14Bracing
Mar15Bracing
Apr17Cool
May19Cool
Jun22Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct23Refreshing
Nov20Refreshing
Dec18Cool

UV index in Uki 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 Uki peaks around June 22 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highModerateJun 22UV 10Dec 21UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr8Very high
May8Very high
Jun10Extreme
Jul10Extreme
Aug9Very high
Sep10Very high
Oct7High
Nov4Moderate
Dec3Moderate

Air quality in Uki 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 Uki is worst in March — around 24 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (July, 13 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 2424 µg/m³Jul 2114 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb20Moderate
Mar24Moderate
Apr24Moderate
May22Moderate
Jun18Moderate
Jul13Moderate
Aug14Moderate
Sep14Moderate
Oct14Moderate
Nov16Moderate
Dec15Moderate
Location & terrain

Where is Uki?

Uki sits at 32.6°N, 130.7°E, 0 m above sea level, in Japan. The nearest listed city is Matsubase, 3.0 km away.

Topography around Uki

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

Within 3 km, the terrain around Uki has only modest variations in elevation — a maximum elevation change of 98 m around an average of 3 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 861 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,757 m.

The land around Uki is covered by cropland (54%) within 3 km, trees (42%), cropland (22%) and water (20%) within 16 km, and trees (65%) and water (21%) within 80 km.

3 km
98 m
16 km
861 m
80 km
1,757 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Matsubase 3.0 km · Uto 7.0 km · Honmachi 14 km · Mifune 18 km · Kotō 19 km · Shimada 19 km · Kumamoto 21 km · Ōyanomachi-noboritate 22 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 Uki (32.6222°, 130.6618°, elevation 0 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).