+35.9647° · +139.6964° · ELEV 0m
Iwatsuki
Japan · Saitama
Monthly weather averages for Iwatsuki, Japan — temperature highs and lows, rainfall, sunshine hours by month, and the best time to visit.
№ 01
August → JanuaryClimate Overview
Iwatsuki has a temperate climate. The warmest month is August (31°C average high) and the coolest is January (9°C).
№ 02
1513 mm / yearRainfall by Month
Iwatsuki sees 1513 mm of rain a year. The wettest month is September (208 mm); the driest is January (51 mm).
№ 03
May–JulyBest Time to Visit
May–July
14°C – 30°C · 8.5h sun
The best time to visit Iwatsuki is May–July, when temperatures average 14°C–30°C with 8.5 sunshine hours per day.
Some visitors prefer March–April for cooler, drier conditions.
№ 04
12 months · °C · mm · hoursMonthly Breakdown
| January | 8.8°C | -1.1°C | 51 mm | 8.1 h | 06:51 | 16:49 |
|---|---|---|---|---|---|---|
| February | 10.0°C | -0.2°C | 62 mm | 8.3 h | 06:29 | 17:21 |
| March | 14.6°C | 4.0°C | 122 mm | 8.3 h | 05:53 | 17:47 |
| April | 19.0°C | 8.5°C | 115 mm | 8.9 h | 05:08 | 18:13 |
| May | 24.0°C | 13.7°C | 117 mm | 9.1 h | 04:36 | 18:39 |
| June | 26.3°C | 18.1°C | 178 mm | 8.1 h | 04:24 | 18:59 |
| July | 29.8°C | 22.3°C | 184 mm | 8.4 h | 04:35 | 18:58 |
| August | 31.1°C | 23.6°C | 132 mm | 9.5 h | 04:59 | 18:32 |
| September | 26.9°C | 19.8°C | 208 mm | 7.5 h | 05:23 | 17:50 |
| October | 21.3°C | 13.5°C | 205 mm | 7.1 h | 05:47 | 17:06 |
| November | 16.6°C | 7.6°C | 83 mm | 7.3 h | 06:17 | 16:34 |
| December | 11.1°C | 1.5°C | 56 mm | 7.5 h | 06:44 | 16:28 |
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View monthly climate averages for nearby cities or compare them with Iwatsuki.
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Temperature, rainfall and sunshine, month by month.