Sendai weather in July

In July, Sendai sees average daytime highs of 26°C and overnight lows near 20°C, with 187 mm of rain across 17.4 wet days and about 14.4 hours of daylight. It is the 2nd-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 24°C in the first days to 27°C by the end. The sky is clear or mostly clear about 10% of the time in July, and the air most often feels muggy.

Daylight stretches from about 14 h 36 min at the start of July to 14 hours by month's end. Set against the rest of the year, July is Sendai's 12th-clearest and 12th-windiest month. For the whole year in context, see Sendai's year-round climate.

Daytime high
26°
2nd warmest
Overnight low
20°
11th coldest
Rainfall
187 mm
17.4 wet days
Daylight
14 h 24 min
4:30 AM – 6:55 PM
Cloud cover
80%
12th clearest
Wind
6 km/h
12th windiest
Solar energy
4.25 kWh/m²
Travel score
5.3
out of 10

Sendai is city in Miyagi Prefecture, Japan.

Air quality
Good
PM2.5 7 µg/m³ · 2010
Density
1,395/km²
people per km²
Founded
1889

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 24°C in the first days to 27°C by the end.

A typical July day in Sendai reaches about 26°C in the afternoon and slips back to 20°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 30°C. Set against its neighbours, July runs about 4°C warmer than June and about 2°C cooler than August.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12418
22418
32418
42418
52418
62419
72419
82519
92519
102519
112519
122519
132519
142520
152520
162520
172620
182620
192620
202620
212620
222620
232621
242721
252721
262721
272721
282721
292721
302721
312721

How July really feels in Sendai

Once humidity and wind are folded in, July 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

July sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Sendai weather by month

How July compares with the rest of the year at a glance. July is the 2nd-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -3°6310.99.99.60.0
Feb / -3°499.27.710.50.0
Mar / -0°8711.65.411.71.4
Apr14° / 9411.21.1134.0
May19° / 11°10311.40145.8
Jun22° / 16°12913.4014.65.8
Jul26° / 20°18717.4014.45.3
Aug27° / 21°16916.2013.55.4
Sep24° / 17°16714.3012.35.8
Oct18° / 11°141110115.6
Nov12° / 639.30.99.93.3
Dec / -0°581169.40.6

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 10% of the time in July, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 11% of July, with mostly cloudy or overcast conditions the remaining 79%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11882
21882
31882
41882
51882
61882
71882
82080
92080
101981
111981
121981
131981
141981
151981
161981
172080
182080
192080
202179
212179
222278
232278
242377
252575
262575
272674
282773
292872
302971
313070

Chance of precipitation in July

Any precipitation

Sendai gets around 187 mm of rain over 17.4 wet days in July, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 56% and peaks near 60% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
155
256
357
457
558
658
759
859
959
1060
1160
1260
1359
1459
1558
1658
1758
1857
1956
2056
2155
2254
2353
2453
2552
2651
2751
2850
2950
3050
3150

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the muggy band about 37% of days. Sticky, muggy-or-worse air turns up on roughly 67% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1317383570
2316373680
32153637100
42143539110
51143439120
61133340130
71123241150
80113141160
90113041170
100102941190
110102841200
120102841210
13092741230
14092641240
15082541260
16082440270
17072340290
18072239310
19062139330
20062038351
21051938371
22051837391
23051736401
24051636422
25041535442
26041434462
27041332483
28041231493
29041230513
30041129524
31041128534

Wind in July

Winds average 6 km/h in July, the calmest month.

Across July, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 14 h 36 min at the start of July to 14 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over July. Sunrise moves from 4:21 AM to 4:42 AM, and sunset from 6:59 PM to 6:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.64:216:59
214.64:216:59
314.64:226:59
414.64:226:59
514.64:236:58
614.64:236:58
714.64:246:58
814.64:246:58
914.54:256:58
1014.54:266:57
1114.54:266:57
1214.54:276:57
1314.54:276:56
1414.54:286:56
1514.44:296:55
1614.44:306:55
1714.44:306:54
1814.44:316:54
1914.44:326:53
2014.34:336:52
2114.34:336:52
2214.34:346:51
2314.34:356:50
2414.24:366:50
2514.24:366:49
2614.24:376:48
2714.24:386:47
2814.14:396:46
2914.14:406:46
3014.14:416:45
3114.04:426:44

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 4.25 kWh/m².

For context, solar energy here swings from a low near 2.06 kWh/m² to a high of 5.34 kWh/m² in May across the year — July's 4.25 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.2Bright
24.2Bright
34.2Bright
44.2Bright
54.2Bright
64.2Bright
74.2Bright
84.2Bright
94.1Bright
104.1Bright
114.1Bright
124.1Bright
134.1Bright
144.1Bright
154.1Bright
164.2Bright
174.2Bright
184.2Bright
194.2Bright
204.2Bright
214.3Bright
224.3Bright
234.3Bright
244.4Bright
254.4Bright
264.5Bright
274.5Bright
284.5Bright
294.5Bright
304.6Bright
314.6Bright
Planning a trip in July

Hazard calendar for Sendai

In seasonPeak

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

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

Sendai'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 July a good time to visit Sendai?

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

5.3
Sightseeing
6th-best month of the year
5.0
Beach & pool
2nd-best month of the year

July is a reasonable time to visit Sendai for sightseeing.

What to pack for Sendai in July

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

In July, Sendai sees daytime highs around 26°C and nights near 20°C. Pack rain gear. Worth having: light clothes. About 17 days see rain.

rain gearlight clothes

Sea temperature near Sendai in July

The nearest coast averages about 21°C in July — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 28 km away) is warmest in August at about 24°C and coldest in March near 9°C.

It's comfortable for a long swim from Jul 7 to Oct 10 — about 3.2 months when the water holds above 20°C.

5°10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan11Bracing
Feb9Bracing
Mar9Bracing
Apr10Bracing
May14Bracing
Jun18Cool
Jul21Refreshing
Aug24Refreshing
Sep23Refreshing
Oct19Cool
Nov17Cool
Dec14Bracing

UV index in Sendai in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July 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 Sendai peaks around August 16 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateAug 16UV 9Jan 1UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun8Very high
Jul8Very high
Aug9Very high
Sep8Very high
Oct5High
Nov3Moderate
Dec2Low
Location & terrain

Where is Sendai?

Sendai sits at 38.3°N, 140.9°E, 53 m above sea level, in Japan. The nearest listed city is Natori-shi, 11 km away.

Topography around Sendai

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

Within 3 km, the terrain around Sendai has only modest variations in elevation — a maximum elevation change of 173 m around an average of 67 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 513 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,978 m.

The land around Sendai is covered by artificial surfaces (74%) and trees (24%) within 3 km, trees (44%) and artificial surfaces (29%) within 16 km, and trees (57%) and water (26%) within 80 km.

3 km
173 m
16 km
513 m
80 km
1,978 m
treesgrasslandcroplandartificial surfacesbare terrainwater
July weather nearby: Natori-shi 11 km · Rifu 12 km · Tagajō-shi 12 km · Tomiya 14 km · Shiogama 16 km · Shōbudahama 17 km · Iwanuma 18 km · Yoshioka 19 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 Sendai (38.2667°, 140.8667°, elevation 53 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).