Hiji weather in May

In May, Hiji sees average daytime highs of 23°C and overnight lows near 15°C, with 130 mm of rain across 10.7 wet days and about 13.7 hours of daylight. It is the 5th-warmest and 6th-wettest month of the year here.

Highs climb over the month, from about 21°C in the first days to 24°C by the end. The sky is clear or mostly clear about 27% 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 Hiji's 10th-clearest and 7th-windiest month. For the whole year in context, see Hiji's year-round climate.

Daytime high
23°
5th warmest
Overnight low
15°
7th coldest
Rainfall
130 mm
10.7 wet days
Daylight
13 h 42 min
5:19 AM – 7:02 PM
Cloud cover
65%
10th clearest
Wind
8 km/h
7th windiest
Solar energy
5.44 kWh/m²
Travel score
6.5
out of 10

Hiji is town in Hayami district, Ōita prefecture, Japan.

Density
389/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 21°C in the first days to 24°C by the end.

A typical May day in Hiji reaches about 23°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 26°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)
12113
22113
32113
42113
52114
62214
72214
82214
92214
102214
112215
122215
132215
142215
152315
162315
172315
182316
192316
202316
212316
222316
232316
242316
252417
262417
272417
282417
292417
302417
312417

How May really feels in Hiji

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.

Hiji 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 / 566.50.7102.0
Feb10° / 667.70.810.82.4
Mar13° / 10010.90.111.73.7
Apr18° / 10°11510.5012.85.7
May23° / 15°13010.7013.76.5
Jun26° / 20°27716.2014.25.4
Jul30° / 24°22016.80144.2
Aug30° / 24°18415.7013.24.2
Sep27° / 21°20114.2012.25.7
Oct22° / 16°1348.4011.27.0
Nov17° / 10°717.4010.35.7
Dec12° / 5560.19.83.3

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% 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 61%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14555
24555
34357
44357
54258
64159
74258
84159
94060
104060
113961
123961
134060
143961
153961
163961
174060
183961
193961
203961
213862
223961
233862
243862
253763
263763
273763
283763
293565
303565
313466

Chance of precipitation in May

Any precipitation

Hiji gets around 130 mm of rain over 10.7 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 34% and peaks near 38% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
134
233
333
433
533
633
734
834
934
1034
1134
1234
1334
1434
1534
1634
1734
1834
1934
2034
2134
2234
2334
2435
2535
2635
2736
2836
2937
3037
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 42% of days. Sticky, muggy-or-worse air turns up on roughly 6% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
16721102
26622102
36423112
46324112
56026113
65827123
75728123
85629123
95330134
105231134
115132134
125033135
134834135
144735135
154536145
164337145
174238155
184038166
193839176
203639186
213539197
223339217
233139227
242939248
252739268
262538279
2723382910
2821373111
2919363312
3017353513
3115333714

Wind in May

Winds average 8 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
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
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 5:32 AM to 5:10 AM, and sunset from 6:50 PM to 7:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.35:326:50
213.35:316:51
313.45:306:52
413.45:296:53
513.45:286:53
613.55:276:54
713.55:266:55
813.55:256:56
913.55:246:56
1013.65:236:57
1113.65:226:58
1213.65:226:59
1313.65:216:59
1413.75:207:00
1513.75:197:01
1613.75:197:02
1713.75:187:02
1813.85:177:03
1913.85:167:04
2013.85:167:05
2113.85:157:05
2213.95:157:06
2313.95:147:07
2413.95:147:07
2513.95:137:08
2613.95:137:09
2714.05:127:09
2814.05:127:10
2914.05:117:11
3014.05:117:11
3114.05:107:12

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.44 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 5.44 kWh/m² in May across the year — May's 5.44 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
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.5Bright
205.5Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.4Bright
265.4Bright
275.4Bright
285.4Bright
295.3Bright
305.3Bright
315.3Bright
Planning a trip in May

Hazard calendar for Hiji

In seasonPeak

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

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

Hiji's rainy season runs May–October, 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 Hiji?

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

6.5
Sightseeing
2nd-best month of the year
4.8
Beach & pool
5th-best month of the year

May is a reasonable time to visit Hiji for sightseeing.

What to pack for Hiji in May

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

In May, Hiji sees daytime highs around 23°C and nights near 15°C. Worth packing: light clothes, rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

Sea temperature near Hiji 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 32 km away) is warmest in August at about 27°C and coldest in February near 12°C.

It's comfortable for a long swim from Jun 6 to Nov 10 — about 5.2 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan13Bracing
Feb12Bracing
Mar12Bracing
Apr14Bracing
May17Cool
Jun21Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct23Refreshing
Nov19Cool
Dec16Cool

UV index in Hiji 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 Hiji peaks around June 20 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highModerateJun 20UV 10Dec 20UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr8Very high
May8Very high
Jun10Extreme
Jul10Very high
Aug10Very high
Sep10Very high
Oct7High
Nov4Moderate
Dec3Moderate

Air quality in Hiji 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 Hiji is worst in March — around 30 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (September, 14 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 1829 µg/m³Sep 2214 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb20Moderate
Mar30Moderate
Apr24Moderate
May22Moderate
Jun19Moderate
Jul14Moderate
Aug15Moderate
Sep14Moderate
Oct14Moderate
Nov15Moderate
Dec14Moderate
Location & terrain

Where is Hiji?

Hiji sits at 33.4°N, 131.5°E, 23 m above sea level, in Japan. The nearest listed city is Kitsuki, 10 km away.

Topography around Hiji

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

Within 3 km, the terrain around Hiji has significant variations in elevation — a maximum elevation change of 566 m around an average of 91 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,535 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,799 m.

The land around Hiji is covered by trees (45%) and water (29%) within 3 km, trees (58%) and water (28%) within 16 km, and trees (48%) and water (43%) within 80 km.

3 km
566 m
16 km
1,535 m
80 km
1,799 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Kitsuki 10 km · Beppu 11 km · Ōita 17 km · Tsurusaki 20 km · Bungo-Takada-shi 22 km · Yufu 24 km · Yokkaichi 26 km · Kunisaki 27 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 Hiji (33.3708°, 131.5302°, elevation 23 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).