Ono weather in May

In May, Ono sees average daytime highs of 18°C and overnight lows near 10°C, with 192 mm of precipitation across 14.4 wet days and about 13.9 hours of daylight. It is the 5th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 17°C in the first days to 20°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 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 Ono's 6th-clearest and 4th-windiest month. For the whole year in context, see Ono's year-round climate.

Daytime high
18°
5th warmest
Overnight low
10°
8th coldest
Precipitation
192 mm
14.4 wet days
Daylight
13 h 54 min
4:53 AM – 6:47 PM
Cloud cover
66%
6th clearest
Wind
9 km/h
4th windiest
Solar energy
5.51 kWh/m²
Travel score
5.3
out of 10

Ono is city in Fukui Prefecture, Japan.

Density
39/km²
people per km²
Founded
1954

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 17°C in the first days to 20°C by the end.

A typical May day in Ono reaches about 18°C in the afternoon and slips back to 10°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 22°C. Set against its neighbours, May runs about 5°C warmer than April and about 3°C cooler than June.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
1167
2178
3178
4178
5178
6178
7178
8179
9189
10189
11189
12189
13189
14189
151810
161810
171910
181910
191910
201910
211911
221911
231911
242011
252011
262011
272012
282012
292012
302012
312012

How May really feels in Ono

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.

Ono 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 / -5°18021.820.69.80.0
Feb / -5°14617.415.510.60.0
Mar / -2°18417.110.411.70.7
Apr13° / 17514.22.912.93.3
May18° / 10°19214.40.113.95.3
Jun22° / 15°24315.4014.45.4
Jul26° / 19°32119.5014.25.1
Aug27° / 20°19417.2013.45.4
Sep23° / 16°24815.4012.25.7
Oct18° / 10°18913.30.111.15.2
Nov11° / 16115.33.410.12.5
Dec / -2°18720.615.39.60.2

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 11% of May, with mostly cloudy or overcast conditions the remaining 63%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14456
24456
34357
44357
54357
64258
74159
84060
94060
104060
113961
123862
133862
143862
153763
163763
173763
183763
193763
203664
213565
223565
233466
243466
253466
263466
273367
283466
293367
303268
313268

Chance of precipitation in May

Any precipitationSnow

Ono gets around 192 mm of rain and snow over 14.4 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 45% and peaks near 48% on the wettest days, and about 0 day brings snow.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1442
2442
3442
4441
5451
6451
7451
8461
9460
10470
11470
12480
13480
14480
15480
16480
17480
18480
19470
20470
21470
22460
23460
24450
25440
26430
27420
28410
29410
30400
31400

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 87% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19550
29550
39460
49460
59271
69271
79181
89181
99181
109181
119181
129091
139091
149091
159091
1688102
1788102
1888102
1987112
2087112
2186122
2285132
2384142
2483152
2582162
2680182
2779192
2876213
2974233
3073243
3170264

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 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
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 5:08 AM to 4:44 AM, and sunset from 6:35 PM to 6:59 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.45:086:35
213.55:076:35
313.55:066:36
413.55:056:37
513.65:046:38
613.65:036:39
713.65:016:40
813.75:006:41
913.75:006:41
1013.74:596:42
1113.84:586:43
1213.84:576:44
1313.84:566:45
1413.84:556:46
1513.94:546:46
1613.94:536:47
1713.94:536:48
1814.04:526:49
1914.04:516:50
2014.04:506:51
2114.04:506:51
2214.14:496:52
2314.14:486:53
2414.14:486:54
2514.14:476:54
2614.14:476:55
2714.24:466:56
2814.24:466:57
2914.24:456:57
3014.24:456:58
3114.24:446:59

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.51 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.14 kWh/m² to a high of 5.51 kWh/m² in May across the year — May's 5.51 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
115.5Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.6Bright
185.6Bright
195.6Bright
205.6Bright
215.6Bright
225.6Bright
235.7Bright
245.7Bright
255.7Bright
265.7Bright
275.7Bright
285.7Bright
295.7Bright
305.6Bright
315.6Bright
Planning a trip in May

Hazard calendar for Ono

In seasonPeak

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

Ono 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 Ono?

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

5.3
Sightseeing
4th-best month of the year
2.0
Beach & pool
5th-best month of the year

May is a reasonable time to visit Ono for sightseeing.

What to pack for Ono in May

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

In May, Ono sees daytime highs around 18°C and nights near 10°C. Pack rain gear. Worth having: sun protection. About 14 days see rain.

rain gearsun protection

Sea temperature near Ono in May

The nearest coast averages about 16°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 36 km away) is warmest in August at about 27°C and coldest in March near 11°C.

It's comfortable for a long swim from Jun 16 to Nov 5 — about 4.7 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan13Bracing
Feb12Bracing
Mar11Bracing
Apr13Bracing
May16Cool
Jun20Refreshing
Jul24Refreshing
Aug27Warm
Sep25Warm
Oct22Refreshing
Nov19Cool
Dec16Cool

UV index in Ono 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 Ono peaks around July 17 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 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 highExtremeVery highModerateJul 17UV 10Jan 10UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar5Moderate
Apr7High
May8Very high
Jun10Very high
Jul10Extreme
Aug10Very high
Sep9Very high
Oct6High
Nov3Moderate
Dec3Moderate

Air quality in Ono 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 Ono is worst in April — around 20 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (December, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1620 µg/m³Dec 1310 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb14Moderate
Mar19Moderate
Apr20Moderate
May19Moderate
Jun17Moderate
Jul13Moderate
Aug12Good
Sep11Good
Oct10Good
Nov11Good
Dec10Good
Location & terrain

Where is Ono?

Ono sits at 36.0°N, 136.5°E, 175 m above sea level, in Japan. The nearest listed city is Katsuyama, 9.0 km away.

Topography around Ono

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

Within 3 km, the terrain around Ono has large variations in elevation — a maximum elevation change of 720 m around an average of 222 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,577 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,671 m.

The land around Ono is covered by cropland (38%), trees (28%) and artificial surfaces (28%) within 3 km, trees (85%) within 16 km, and trees (62%) and water (25%) within 80 km.

3 km
720 m
16 km
1,577 m
80 km
2,671 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Katsuyama 9.0 km · Iijima 17 km · Fukui-shi 26 km · Maruoka 27 km · Sabae 27 km · Takefu 30 km · Echizen 30 km · Sakai 32 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 Ono (35.9811°, 136.4873°, elevation 175 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).