Kawasaki is warmest in August, averaging 32° by day and 24° at night. The wettest month is June with 258 mm, and the year brings about 1887 mm in total.
Month by month
| Month | High | Low | Rain | Sea | Daylight | Good for |
|---|---|---|---|---|---|---|
| January | 10° | 1° | 65 mm | 15° | 9.8 h | Cool |
| February | 11° | 1° | 73 mm | 14° | 10.7 h | Cool |
| March | 15° | 4° | 155 mm | 14° | 11.7 h | Mild |
| April | 19° | 9° | 162 mm | 16° | 12.9 h | Mild |
| May | 23° | 14° | 189 mm | 19° | 13.9 h | Rainy season |
| June | 26° | 18° | 258 mm | 22° | 14.4 h | Rainy season |
| July | 30° | 23° | 217 mm | 25° | 14.2 h | Rainy season |
| August | 32° | 24° | 192 mm | 27° | 13.3 h | Rainy season |
| September | 28° | 21° | 219 mm | 26° | 12.2 h | Rainy season |
| October | 22° | 15° | 205 mm | 23° | 11.1 h | Rainy season |
| November | 18° | 9° | 99 mm | 20° | 10.1 h | Sightseeing |
| December | 12° | 3° | 53 mm | 17° | 9.6 h | Mild |
High and low are average daily maximum and minimum, rain is typical monthly total, sea is the average surface temperature, daylight is the hours between sunrise and sunset mid-month. Climate normals from NASA POWER and NOAA MUR — averages, not promises.
When to go
Beach weather: No month in Kawasaki combines swimming warmth with dry skies.
Walking the city: November — highs of 18–18° and no more than 99 mm of rain a month.
Wet season: May, June, July, August, September and October — up to 258 mm in a single month.