Honmachi weather in May

In May, Honmachi sees average daytime highs of 23°C and overnight lows near 17°C, with 174 mm of rain across 11.8 wet days and about 13.6 hours of daylight. It is the 5th-warmest and 4th-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 25% of the time in May, and the air most often feels humid.

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 Honmachi's 10th-clearest and 11th-windiest month. For the whole year in context, see Honmachi's year-round climate.

Daytime high
23°
5th warmest
Overnight low
17°
8th coldest
Rainfall
174 mm
11.8 wet days
Daylight
13 h 42 min
5:24 AM – 7:04 PM
Cloud cover
67%
10th clearest
Wind
8 km/h
11th windiest
Solar energy
5.13 kWh/m²
Travel score
6.4
out of 10

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 Honmachi reaches about 23°C in the afternoon and slips back to 17°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 21°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)
12216
22216
32216
42216
52216
62216
72216
82317
92317
102317
112317
122317
132317
142317
152317
162317
172418
182418
192418
202418
212418
222418
232418
242418
252418
262419
272419
282519
292519
302519
312519

How May really feels in Honmachi

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.

Honmachi 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
Jan10° / 739.40.610.12.2
Feb11° / 909.80.210.82.7
Mar15° / 13312.5011.84.1
Apr19° / 13°15111.9012.85.8
May23° / 17°17411.8013.66.4
Jun26° / 21°42818.3014.15.1
Jul29° / 25°34718.3013.94.1
Aug31° / 25°16216.1013.23.9
Sep28° / 22°17513.2012.25.6
Oct23° / 17°1008.2011.27.2
Nov18° / 12°968.8010.35.8
Dec12° / 8390.29.93.3

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% 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 63%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14060
24060
34060
44060
54060
63961
73961
83961
93862
103862
113862
123862
133862
143862
153763
163862
173862
183763
193763
203862
213862
223664
233664
243664
253664
263565
273466
283367
293268
303268
313268

Chance of precipitation in May

Any precipitation

Honmachi gets around 174 mm of rain over 11.8 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 39% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
139
239
339
439
539
639
739
839
939
1039
1139
1238
1338
1438
1537
1637
1737
1837
1936
2036
2136
2236
2336
2436
2536
2637
2737
2837
2938
3038
3139

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the humid band about 33% of days. Sticky, muggy-or-worse air turns up on roughly 15% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
141331970
240332070
338342180
436342280
534342391
632342491
7313425101
8293426101
9283427101
10273428111
11253528111
12243529111
13233530111
14223531121
15213532121
16203533121
17193534121
18183435131
19163436131
20153337141
21143338141
22133239151
23123240161
24113140171
25103041181
2692942191
2782743202
2872643222
2962544232
3052344253
3152144273

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.

051015151015202531
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
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 5:37 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)
113.35:376:53
213.35:366:53
313.35:356:54
413.45:346:55
513.45:336:56
613.45:326:56
713.45:316:57
813.55:306:58
913.55:296:59
1013.55:296:59
1113.55:287:00
1213.65:277:01
1313.65:267:02
1413.65:257:02
1513.65:257:03
1613.75:247:04
1713.75:237:04
1813.75:237:05
1913.75:227:06
2013.85:217:07
2113.85:217:07
2213.85:207:08
2313.85:207:09
2413.85:197:09
2513.95:197:10
2613.95:187:11
2713.95:187:11
2813.95:177:12
2913.95:177:13
3013.95:177:13
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 5.13 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.28 kWh/m² to a high of 5.13 kWh/m² in May across the year — May's 5.13 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
85.1Bright
95.1Bright
105.1Bright
115.1Bright
125.1Bright
135.1Bright
145.1Bright
155.1Bright
165.1Bright
175.2Bright
185.2Bright
195.2Bright
205.2Bright
215.2Bright
225.2Bright
235.2Bright
245.2Bright
255.2Bright
265.2Bright
275.1Bright
285.1Bright
295.1Bright
305.0Bright
315.0Bright
Planning a trip in May

Hazard calendar for Honmachi

In seasonPeak

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

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

Honmachi'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 Honmachi?

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
5.1
Beach & pool
5th-best month of the year

May is a reasonable time to visit Honmachi for sightseeing.

What to pack for Honmachi in May

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

In May, Honmachi sees daytime highs around 23°C and nights near 17°C. Worth packing: light clothes, rain gear and sun protection. About 12 days see rain.

light clothesrain gearsun protection

Sea temperature near Honmachi 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 25 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 Honmachi in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Honmachi peaks around July 12 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 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 highHighModerateJul 12UV 10Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr8Very high
May8Very high
Jun10Very high
Jul10Extreme
Aug9Very high
Sep10Very high
Oct7High
Nov4Moderate
Dec3Moderate

Air quality in Honmachi 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 Honmachi 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 Honmachi?

Honmachi sits at 32.5°N, 130.6°E, 6 m above sea level, in Japan. The nearest listed city is Uki, 14 km away.

Topography around Honmachi

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

Within 3 km, the terrain around Honmachi has only modest variations in elevation — a maximum elevation change of 30 m around an average of 4 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 974 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,717 m.

The land around Honmachi is covered by artificial surfaces (57%) and cropland (20%) within 3 km, trees (44%) and water (35%) within 16 km, and trees (62%) and water (26%) within 80 km.

3 km
30 m
16 km
974 m
80 km
1,717 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Uki 14 km · Matsubase 17 km · Ōyanomachi-noboritate 19 km · Uto 21 km · Sashiki 24 km · Mifune 32 km · Shimada 33 km · Kotō 33 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 Honmachi (32.5044°, 130.5995°, elevation 6 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).