Hayashino weather in May

In May, Hayashino sees average daytime highs of 23°C and overnight lows near 13°C, with 145 mm of rain across 10.6 wet days and about 13.8 hours of daylight. It is the 5th-warmest and 4th-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 28% 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 Hayashino's 10th-clearest and 6th-windiest month. For the whole year in context, see Hayashino's year-round climate.

Daytime high
23°
5th warmest
Overnight low
13°
8th coldest
Rainfall
145 mm
10.6 wet days
Daylight
13 h 48 min
5:05 AM – 6:55 PM
Cloud cover
64%
10th clearest
Wind
8 km/h
6th windiest
Solar energy
5.73 kWh/m²
Travel score
6.6
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 24°C by the end.

A typical May day in Hayashino reaches about 23°C in the afternoon and slips back to 13°C overnight — a 10°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)
12111
22111
32111
42111
52111
62112
72212
82212
92212
102212
112212
122212
132213
142213
152213
162313
172313
182313
192313
202313
212314
222314
232314
242314
252414
262414
272414
282415
292415
302415
312415

How May really feels in Hayashino

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.

Hayashino weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 445.81.69.91.4
Feb / 567.2210.71.8
Mar13° / 11010.80.411.73.4
Apr18° / 12210.4012.95.7
May23° / 13°14510.6013.86.6
Jun26° / 18°18513.5014.35.8
Jul30° / 22°21715.7014.14.4
Aug31° / 23°13413.3013.34.2
Sep27° / 19°18411.8012.25.9
Oct22° / 13°1178011.17.0
Nov16° / 626.1010.25.4
Dec10° / 5160.69.72.7

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% 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 59%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14654
24654
34654
44654
54555
64456
74357
84357
94258
104159
114159
124159
134258
144159
154159
164060
174159
184159
194159
204159
214159
224060
234060
244060
254060
263862
273862
283862
293664
303466
313466

Chance of precipitation in May

Any precipitation

Hayashino gets around 145 mm of rain over 10.6 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 36% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
134
234
334
434
534
634
735
835
935
1035
1135
1236
1335
1435
1535
1635
1734
1834
1933
2033
2133
2233
2332
2432
2532
2632
2731
2831
2931
3032
3132

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 63% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1801541
2791551
3781651
4771751
5761761
6751861
7751861
8731971
9731971
10722071
11712081
12702181
13702181
14682291
15672391
16672391
176524101
186425101
196226111
206127111
216027121
225828131
235529142
245430142
255231152
265032162
274833172
284634182
294335203
304135213
313836223

Wind in May

Winds average 8 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
168calm
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 5:19 AM to 4:56 AM, and sunset from 6:42 PM to 7:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.45:196:42
213.45:186:43
313.55:176:44
413.55:166:45
513.55:156:46
613.55:146:46
713.65:136:47
813.65:126:48
913.65:116:49
1013.75:106:50
1113.75:096:51
1213.75:086:51
1313.85:076:52
1413.85:066:53
1513.85:066:54
1613.85:056:55
1713.95:046:55
1813.95:036:56
1913.95:036:57
2013.95:026:58
2114.05:016:58
2214.05:016:59
2314.05:007:00
2414.04:597:01
2514.04:597:01
2614.14:587:02
2714.14:587:03
2814.14:577:04
2914.14:577:04
3014.14:567:05
3114.24:567:06

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.73 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.29 kWh/m² to a high of 5.73 kWh/m² in May across the year — May's 5.73 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.6Bright
25.6Bright
35.6Bright
45.6Bright
55.7Bright
65.7Bright
75.7Bright
85.7Bright
95.7Bright
105.7Bright
115.7Bright
125.7Bright
135.7Bright
145.7Bright
155.7Bright
165.7Bright
175.8Bright
185.8Bright
195.8Bright
205.8Bright
215.8Bright
225.8Bright
235.8Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.8Bright
305.8Bright
315.7Bright
Planning a trip in May

Hazard calendar for Hayashino

In seasonPeak

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

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

Hayashino's rainy season runs March–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 Hayashino?

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

6.6
Sightseeing
2nd-best month of the year
4.9
Beach & pool
5th-best month of the year

May is a reasonable time to visit Hayashino for sightseeing.

What to pack for Hayashino in May

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

In May, Hayashino sees daytime highs around 23°C and nights near 13°C. Worth packing: light clothes, rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

Sea temperature near Hayashino 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 46 km away) is warmest in August at about 27°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 7 to Nov 12 — about 5.2 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar13Bracing
Apr15Bracing
May17Cool
Jun21Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct24Refreshing
Nov20Cool
Dec16Cool

UV index in Hayashino 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 Hayashino peaks around July 13 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 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 highVery highModerateJul 13UV 10Dec 22UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5High
Apr7Very high
May8Very high
Jun10Very high
Jul10Extreme
Aug9Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec2Moderate

Air quality in Hayashino 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 Hayashino is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (October, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1421 µg/m³Oct 1711 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb16Moderate
Mar20Moderate
Apr21Moderate
May19Moderate
Jun17Moderate
Jul14Moderate
Aug12Moderate
Sep12Good
Oct10Good
Nov12Good
Dec11Good
Location & terrain

Where is Hayashino?

Hayashino sits at 35.0°N, 134.2°E, 83 m above sea level, in Japan. The nearest listed city is Tsuyama, 15 km away.

Topography around Hayashino

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

Within 3 km, the terrain around Hayashino has significant variations in elevation — a maximum elevation change of 281 m around an average of 153 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 743 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,622 m.

The land around Hayashino is covered by trees (74%) within 3 km, trees (82%) within 16 km, and trees (65%) and water (23%) within 80 km.

3 km
281 m
16 km
743 m
80 km
1,622 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Tsuyama 15 km · Sayō 19 km · Kamigōri 24 km · Akaiwa 24 km · Bizen 25 km · Kariya 35 km · Aioi 36 km · Yamazakichō-nakabirose 36 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 Hayashino (35°, 134.15°, elevation 83 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).