Hamanoichi weather in May

In May, Hamanoichi sees average daytime highs of 24°C and overnight lows near 15°C, with 205 mm of rain across 11.7 wet days and about 13.6 hours of daylight. It is the 6th-warmest and 3rd-wettest month of the year here.

Highs climb over the month, from about 22°C in the first days to 25°C by the end. The sky is clear or mostly clear about 22% of the time in May, and the air most often feels comfortable.

Daylight stretches from about 13 h 12 min at the start of May to 13 h 54 min by month's end. Set against the rest of the year, May is Hamanoichi's 10th-clearest and 7th-windiest month. For the whole year in context, see Hamanoichi's year-round climate.

Daytime high
24°
6th warmest
Overnight low
15°
7th coldest
Rainfall
205 mm
11.7 wet days
Daylight
13 h 36 min
5:25 AM – 7:02 PM
Cloud cover
71%
10th clearest
Wind
8 km/h
7th windiest
Solar energy
5 kWh/m²
Travel score
6.4
out of 10

Hamanoichi is human settlement in Japan.

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 22°C in the first days to 25°C by the end.

A typical May day in Hamanoichi reaches about 24°C in the afternoon and slips back to 15°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 27°C. Set against its neighbours, May runs about 4°C warmer than April and about 2°C cooler than June.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12213
22213
32213
42314
52314
62314
72314
82314
92314
102315
112315
122315
132415
142415
152415
162415
172415
182415
192416
202416
212416
222416
232416
242416
252416
262516
272517
282517
292517
302517
312517

How May really feels in Hamanoichi

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.

Hamanoichi weather by month

How May compares with the rest of the year at a glance. May is the 6th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan11° / 808.310.22.8
Feb12° / 102910.83.3
Mar16° / 15712.911.84.6
Apr20° / 11°18111.812.85.9
May24° / 15°20511.713.66.4
Jun26° / 20°48819.9144.8
Jul30° / 24°29919.413.93.9
Aug31° / 24°17418.313.23.8
Sep28° / 21°2021512.25.2
Oct24° / 15°114911.27.1
Nov18° / 1078.210.46.2
Dec13° / 817.1104.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 22% 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 68%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13862
23763
33664
43664
53565
63565
73565
83565
93466
103466
113466
123466
133466
143466
153367
163268
173268
183268
193268
203268
213169
223070
233070
243070
253070
262971
272872
282872
292773
302674
312575

Chance of precipitation in May

Any precipitation

Hamanoichi gets around 205 mm of rain over 11.7 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 38% and peaks near 43% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
137
237
337
437
537
637
737
838
938
1038
1138
1238
1338
1438
1538
1638
1737
1837
1937
2037
2137
2237
2337
2438
2538
2638
2739
2840
2941
3042
3143

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

Most of May feels comfortable — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, May lands in the comfortable band about 33% of days. Sticky, muggy-or-worse air turns up on roughly 13% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
149291560
247291670
346301770
444301781
542311881
641311991
739311991
838312091
9373220101
10363221101
11353221101
12343321111
13333422111
14323422111
15313522111
16303523111
17293524111
18283524121
19263525121
20253526121
21243527121
22233528131
23213529131
24203531141
25183432142
26173433152
27163334162
28143235172
29133136182
30113037203
31102837213

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
127calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 12 min at the start of May to 13 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 42 minutes over May. Sunrise moves from 5:37 AM to 5:17 AM, and sunset from 6:51 PM to 7:11 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.25:376:51
213.35:366:52
313.35:366:52
413.35:356:53
513.35:346:54
613.45:336:55
713.45:326:55
813.45:316:56
913.45:306:57
1013.55:296:57
1113.55:296:58
1213.55:286:59
1313.55:277:00
1413.65:267:00
1513.65:267:01
1613.65:257:02
1713.65:247:02
1813.75:247:03
1913.75:237:04
2013.75:227:04
2113.75:227:05
2213.75:217:06
2313.85:217:06
2413.85:207:07
2513.85:207:08
2613.85:197:08
2713.85:197:09
2813.95:197:10
2913.95:187:10
3013.95:187:11
3113.95:177:11

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.57 kWh/m² to a high of 5 kWh/m² in May across the year — May's 5 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
45.0Bright
55.0Bright
65.0Bright
75.0Bright
85.0Bright
95.0Bright
105.0Bright
115.0Bright
125.0Bright
135.0Bright
145.0Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
245.0Bright
255.0Bright
265.0Bright
274.9Bright
284.9Bright
294.8Bright
304.8Bright
314.8Bright
Planning a trip in May

Hazard calendar for Hamanoichi

In seasonPeak

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

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

Hamanoichi'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 Hamanoichi?

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

6.4
Sightseeing
2nd-best month of the year
5.2
Beach & pool
4th-best month of the year

May is a reasonable time to visit Hamanoichi for sightseeing.

What to pack for Hamanoichi in May

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

In May, Hamanoichi sees daytime highs around 24°C and nights near 15°C. Worth packing: light clothes, rain gear and sun protection. About 12 days see rain.

light clothesrain gearsun protection

Sea temperature near Hamanoichi in May

The nearest coast averages about 21°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 39 km away) is warmest in August at about 28°C and coldest in February near 18°C.

It's comfortable for a long swim from Apr 24 to Dec 26 — about 8.1 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan19Cool
Feb18Cool
Mar18Cool
Apr20Cool
May21Refreshing
Jun24Refreshing
Jul27Warm
Aug28Tropical
Sep27Warm
Oct25Warm
Nov23Refreshing
Dec21Refreshing

UV index in Hamanoichi 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 Hamanoichi peaks around June 23 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 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 highHighModerateJun 23UV 11Dec 23UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar7High
Apr8Very high
May8Very high
Jun11Extreme
Jul11Extreme
Aug9Very high
Sep10Very high
Oct6High
Nov5Moderate
Dec3Moderate

Air quality in Hamanoichi 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 Hamanoichi is worst in April — around 23 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (October, 12 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1423 µg/m³Oct 1012 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb19Moderate
Mar22Moderate
Apr23Moderate
May21Moderate
Jun17Moderate
Jul12Moderate
Aug14Moderate
Sep12Moderate
Oct12Moderate
Nov14Moderate
Dec13Moderate
Location & terrain

Where is Hamanoichi?

Hamanoichi sits at 31.7°N, 130.7°E, -1 m above sea level, in Japan. The nearest listed city is Kokubu-matsuki, 4.0 km away.

Topography around Hamanoichi

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

Within 3 km, the terrain around Hamanoichi has only modest variations in elevation — a maximum elevation change of 146 m around an average of 6 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,097 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,680 m.

The land around Hamanoichi is covered by water (48%) and artificial surfaces (27%) within 3 km, trees (56%) and water (29%) within 16 km, and trees (54%) and water (38%) within 80 km.

3 km
146 m
16 km
1,097 m
80 km
1,680 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Kokubu-matsuki 4.0 km · Kirishima 4.0 km · Kajiki 7.0 km · Aira 15 km · Kagoshima 24 km · Soo 26 km · Tarumizu 26 km · Sueyoshichō-ninokata 28 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 Hamanoichi (31.7167°, 130.7333°, elevation -1 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).