Saijō weather in July

In July, Saijō sees average daytime highs of 28°C and overnight lows near 23°C, with 228 mm of rain across 15.6 wet days and about 14 hours of daylight. It is the 2nd-warmest and 2nd-wettest month of the year here.

Highs climb over the month, from about 26°C in the first days to 29°C by the end. The sky is clear or mostly clear about 20% of the time in July, and the air most often feels oppressive.

Daylight stretches from about 14 h 12 min at the start of July to 13 h 42 min by month's end. Set against the rest of the year, July is Saijō's 11th-clearest and 10th-windiest month. For the whole year in context, see Saijō's year-round climate.

Daytime high
28°
2nd warmest
Overnight low
23°
11th coldest
Rainfall
228 mm
15.6 wet days
Daylight
14 h 06 min
5:11 AM – 7:14 PM
Cloud cover
71%
11th clearest
Wind
8 km/h
10th windiest
Solar energy
5.28 kWh/m²
Travel score
5.1
out of 10

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 26°C in the first days to 29°C by the end.

A typical July day in Saijō reaches about 28°C in the afternoon and slips back to 23°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 30°C. Set against its neighbours, July runs about 4°C warmer than June and about 1°C cooler than August.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12622
22622
32622
42622
52622
62722
72723
82723
92723
102723
112723
122723
132823
142823
152823
162824
172824
182824
192824
202824
212824
222924
232924
242924
252924
262924
272924
282924
292925
302925
312925

How July really feels in Saijō

Once humidity and wind are folded in, July averages 7 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
7
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.

Saijō 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 daysSnow daysDaylight (hours)Travel score
Jan / 7813.53.4101.1
Feb / 8412.13.210.71.5
Mar12° / 12213.4111.72.9
Apr17° / 10°13411.60.112.85.1
May21° / 15°15811.2013.76.3
Jun24° / 19°24915.1014.25.7
Jul28° / 23°22815.60145.1
Aug29° / 24°15113.8013.35.0
Sep26° / 21°21614.1012.26.0
Oct21° / 16°16611011.16.4
Nov15° / 10°909.9010.24.8
Dec10° / 9012.81.69.82.3

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 20% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 13% of July, with mostly cloudy or overcast conditions the remaining 67%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12080
22080
32080
42179
52377
62377
72476
82476
92575
102674
112773
122872
132872
143070
153070
163268
173367
183466
193565
203664
213763
223961
234060
244159
254357
264456
274555
284654
294852
304852
314951

Chance of precipitation in July

Any precipitation

Saijō gets around 228 mm of rain over 15.6 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 50% and peaks near 62% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
162
262
361
461
560
659
759
858
957
1055
1154
1253
1351
1450
1549
1648
1747
1846
1945
2045
2144
2244
2343
2443
2543
2643
2743
2843
2943
3043
3144

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the oppressive band about 70% of days. Sticky, muggy-or-worse air turns up on roughly 97% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
111044440
21943470
31841500
41740520
50638551
60537571
70435601
80433621
90332641
100330661
110329662
120227692
130225712
140223732
150221743
160219763
170218764
180216784
190215794
200214795
210213796
220212806
230211807
240110818
25019828
26018829
270188110
280178111
290178111
300168112
310168112

Wind in July

Winds average 8 km/h in July.

Across July, 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
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 14 h 12 min at the start of July to 13 h 42 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 5:04 AM to 5:21 AM, and sunset from 7:18 PM to 7:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.25:047:18
214.25:047:18
314.25:047:18
414.25:057:17
514.25:057:17
614.25:067:17
714.25:067:17
814.25:077:17
914.25:077:17
1014.15:087:16
1114.15:087:16
1214.15:097:16
1314.15:107:16
1414.15:107:15
1514.15:117:15
1614.15:117:14
1714.05:127:14
1814.05:137:14
1914.05:137:13
2014.05:147:13
2114.05:147:12
2213.95:157:12
2313.95:167:11
2413.95:177:10
2513.95:177:10
2613.95:187:09
2713.85:197:08
2813.85:197:08
2913.85:207:07
3013.85:217:06
3113.75:217:05

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.28 kWh/m².

For context, solar energy here swings from a low near 2.35 kWh/m² to a high of 5.61 kWh/m² in May across the year — July's 5.28 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.8Bright
44.8Bright
54.8Bright
64.9Bright
74.9Bright
85.0Bright
95.0Bright
105.0Bright
115.1Bright
125.1Bright
135.2Bright
145.2Bright
155.3Bright
165.3Bright
175.4Bright
185.4Bright
195.4Bright
205.5Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.6Bright
265.6Bright
275.6Bright
285.6Bright
295.6Bright
305.6Bright
315.6Bright
Planning a trip in July

Hazard calendar for Saijō

In seasonPeak

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

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

Pacific typhoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is July a good time to visit Saijō?

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

5.1
Sightseeing
5th-best month of the year
5.8
Beach & pool
2nd-best month of the year

July is a reasonable time to visit Saijō for sightseeing.

What to pack for Saijō in July

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

In July, Saijō sees daytime highs around 28°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 16 days see rain.

light clothesrain gearsun protection

Sea temperature near Saijō in July

The nearest coast averages about 25°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 24 km away) is warmest in August at about 28°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 3 to Nov 14 — about 5.4 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Bracing
Feb13Bracing
Mar13Bracing
Apr15Cool
May18Cool
Jun22Refreshing
Jul25Warm
Aug28Warm
Sep27Warm
Oct24Refreshing
Nov20Cool
Dec17Cool

UV index in Saijō in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Saijō 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 — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highModerateJul 12UV 10Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr7Very high
May9Very high
Jun10Extreme
Jul10Extreme
Aug9Very high
Sep10Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Saijō 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 Saijō is worst in April — around 22 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (October, 11 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1321 µg/m³Oct 1311 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb16Moderate
Mar20Moderate
Apr22Moderate
May19Moderate
Jun16Moderate
Jul13Moderate
Aug12Moderate
Sep11Good
Oct11Good
Nov12Good
Dec11Good
Location & terrain

Where is Saijō?

Saijō sits at 33.9°N, 133.2°E, 8 m above sea level, in Japan. The nearest listed city is Niihama, 12 km away.

Topography around Saijō

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

Within 3 km, the terrain around Saijō has significant variations in elevation — a maximum elevation change of 275 m around an average of 16 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,886 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,900 m.

The land around Saijō is covered by artificial surfaces (46%) and cropland (25%) within 3 km, trees (50%) and water (31%) within 16 km, and trees (58%) and water (34%) within 80 km.

3 km
275 m
16 km
1,886 m
80 km
1,900 m
treesgrasslandcroplandartificial surfacesbare terrainwater
July weather nearby: Niihama 12 km · Imabari 24 km · Tōon 30 km · Shikokuchūō 34 km · Shinagawa 35 km · Hōjō 38 km · Kawanoechō 38 km · Matsuyama 40 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 Saijō (33.9167°, 133.1833°, elevation 8 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).