Sendai weather in July

In July, Sendai sees average daytime highs of 29°C and overnight lows near 25°C, with 324 mm of rain across 17.6 wet days and about 13.9 hours of daylight. It is the 2nd-warmest and 2nd-wettest month of the year here.

Highs climb over the month, from about 27°C in the first days to 30°C by the end. The sky is clear or mostly clear about 24% of the time in July, and the air most often feels miserable.

Daylight stretches from about 14 h 06 min at the start of July to 13 h 36 min by month's end. Set against the rest of the year, July is Sendai's 11th-clearest and 8th-windiest month. For the whole year in context, see Sendai's year-round climate.

Daytime high
29°
2nd warmest
Overnight low
25°
11th coldest
Rainfall
324 mm
17.6 wet days
Daylight
13 h 54 min
5:28 AM – 7:21 PM
Cloud cover
69%
11th clearest
Wind
12 km/h
8th windiest
Solar energy
4.9 kWh/m²
Travel score
4.7
out of 10

Sendai is city in Kagoshima prefecture, Japan.

Density
135/km²
people per km²
Founded
2004

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 27°C in the first days to 30°C by the end.

A typical July day in Sendai reaches about 29°C in the afternoon and slips back to 25°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 30°C. Set against its neighbours, July runs about 4°C warmer than June and about 1°C cooler than August.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12724
22724
32724
42724
52724
62724
72825
82825
92825
102825
112825
122825
132825
142825
152925
162925
172926
182926
192926
202926
212926
222926
232926
242926
252926
263026
273026
283026
293026
303026
313026

How July really feels in Sendai

Once humidity and wind are folded in, July averages 21 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
21
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in July is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Sendai weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan12° / 9812.310.22.8
Feb12° / 11311.210.83.1
Mar15° / 11°16113.411.84.2
Apr18° / 14°18611.712.85.6
May22° / 18°20511.313.66.3
Jun25° / 22°50018.5145.2
Jul29° / 25°32417.613.94.7
Aug30° / 26°16615.713.24.5
Sep28° / 24°19813.112.25.7
Oct24° / 20°1098.711.27.2
Nov19° / 15°1229.310.46.1
Dec14° / 10°10310.6104.0

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 12% of July, with mostly cloudy or overcast conditions the remaining 65%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11882
21981
32080
42278
52278
62476
72476
82674
92773
102971
113070
123169
133268
143367
153466
163565
173763
183862
193961
204060
214258
224258
234456
244555
254753
264852
274951
284951
295050
305050
315050

Chance of precipitation in July

Any precipitation

Sendai gets around 324 mm of rain over 17.6 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 57% and peaks near 72% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
172
272
371
470
569
668
766
865
964
1062
1161
1260
1358
1457
1556
1654
1753
1852
1951
2050
2150
2249
2349
2449
2548
2648
2748
2847
2947
3047
3147

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the miserable band about 59% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
11165231
21155034
31135037
40124839
50114742
6094645
7084447
8074349
9074251
10064054
11053956
12053857
13043759
14043561
15033463
16033364
17033265
18023167
19023167
20023068
21023068
22023068
23012970
24012970
25012970
26012970
27012970
28002971
29002872
30002872
31002872

Wind in July

Winds average 12 km/h in July.

Across July, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112calm
1212calm
1312calm
1412calm
1512calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 14 h 06 min at the start of July to 13 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 30 minutes over July. Sunrise moves from 5:20 AM to 5:37 AM, and sunset from 7:24 PM to 7:13 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.15:207:24
214.05:217:24
314.05:217:24
414.05:227:24
514.05:227:24
614.05:237:24
714.05:237:23
814.05:237:23
914.05:247:23
1014.05:247:23
1114.05:257:23
1213.95:257:22
1313.95:267:22
1413.95:277:22
1513.95:277:21
1613.95:287:21
1713.95:287:21
1813.95:297:20
1913.85:297:20
2013.85:307:19
2113.85:317:19
2213.85:317:18
2313.85:327:18
2413.75:337:17
2513.75:337:17
2613.75:347:16
2713.75:347:16
2813.75:357:15
2913.65:367:14
3013.65:367:13
3113.65:377:13

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 4.9 kWh/m².

For context, solar energy here swings from a low near 2.33 kWh/m² to a high of 5.13 kWh/m² in May across the year — July's 4.9 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.1Bright
24.1Bright
34.2Bright
44.2Bright
54.3Bright
64.4Bright
74.4Bright
84.5Bright
94.6Bright
104.6Bright
114.7Bright
124.8Bright
134.8Bright
144.9Bright
154.9Bright
165.0Bright
175.0Bright
185.1Bright
195.1Bright
205.2Bright
215.2Bright
225.2Bright
235.2Bright
245.3Bright
255.3Bright
265.3Bright
275.3Bright
285.3Bright
295.3Bright
305.3Bright
315.3Bright
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 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 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).

4.7
Sightseeing
7th-best month of the year
5.6
Beach & pool
4th-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 29°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 18 days see rain.

light clothesrain gearsun protection

Sea temperature near Sendai in July

The nearest coast averages about 26°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 18 km away) is warmest in August at about 28°C and coldest in February near 17°C.

It's comfortable for a long swim from May 9 to Dec 11 — about 7.1 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan18Cool
Feb17Cool
Mar17Cool
Apr18Cool
May21Refreshing
Jun23Refreshing
Jul26Warm
Aug28Tropical
Sep27Warm
Oct25Warm
Nov22Refreshing
Dec20Cool

UV index in Sendai in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Sendai peaks around July 10 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 10UV 10Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar7High
Apr8Very high
May8Very high
Jun10Extreme
Jul11Extreme
Aug9Very high
Sep10Very high
Oct6High
Nov5Moderate
Dec3Moderate

Air quality in Sendai in July

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where July falls, not just the annual average.

Air quality in Sendai 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 Sendai?

Sendai sits at 31.8°N, 130.3°E, 5 m above sea level, in Japan. The nearest listed city is Ichikikushikino, 10 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 179 m around an average of 32 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 686 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,644 m.

The land around Sendai is covered by trees (41%) and artificial surfaces (41%) within 3 km, trees (69%) and water (21%) within 16 km, and water (52%) and trees (41%) within 80 km.

3 km
179 m
16 km
686 m
80 km
1,644 m
treesgrasslandcroplandartificial surfacesbare terrainwater
July weather nearby: Ichikikushikino 10 km · Kushikino 12 km · Umeki 18 km · Tsuruda 23 km · Akune 24 km · Ijūin 24 km · Aira 28 km · Izumi 30 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 (31.8167°, 130.3°, elevation 5 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).