Isumi, Japan Climate
Japan
Pop. 35,544 Elev. 1 m / 3 ft
TZ: Asia/Tokyo (UTC+9) ·
Isumi has mild summers with average highs of 84°F (29°C) in August, and cool winters averaging 42°F (6°C) in February. Humidity pushes the summer feels-like temperature to around 97°F (36°C). Rain falls on about 82 days per year (59.8 in / 1520 mm total). The city averages 117 sunny days per year and around 35 thunderstorm days. Ocean water temperatures reach 84°F (29°C) in summer.
| Temperature | 29°C (84°F) high | 6°C (42°F) low |
| Feels like | 36°C (97°F) high | 3°C (37°F) low |
| Rain | 82 days | 1520 mm (59.8 in) /yr |
| Sky | 117 sunny | 35 stormy |
| Wind | 2.3 m/s (5.2 mph) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Apr, Jun, Jul, Aug, Sep, Nov
Sky & Air by Month
Cloud cover (%)
34
Jan 38
Feb 61
Mar 59
Apr 86
May 74
Jun 57
Jul 56
Aug 58
Sep 78
Oct 50
Nov 48
Dec Humidity (%)
60
Jan 55
Feb 71
Mar 74
Apr 80
May 84
Jun 83
Jul 85
Aug 79
Sep 78
Oct 69
Nov 66
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 60 km Narita International Airport (NRT)
Ski resort 148 km スノーパーク イエティ
National park 153 km 高鈴県立自然公園
Mountain peak
(1,567 m) 116 km 丹沢山
Hospital 6 km 永津会齊藤病院
Hiking trail 5 km KFT - C17 - Onjyuku kaigan wo aruku michi
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 11°C 52°F | 7°C 44°F | 62 mm 2.4 in | — | 21 |
| February | 10°C 50°F | 6°C 42°F | 31 mm 1.2 in | — | 16 |
| March | 14°C 57°F | 10°C 49°F | 183 mm 7.2 in | 5 mm0.2 in | 9 |
| April | 17°C 63°F | 14°C 57°F | 155 mm 6.1 in | — | 9 |
| May | 20°C 68°F | 18°C 64°F | 201 mm 7.9 in | — | 1 |
| June | 25°C 77°F | 23°C 73°F | 104 mm 4.1 in | — | 3 |
| July | 28°C 83°F | 26°C 78°F | 105 mm 4.1 in | — | 10 |
| August | 29°C 84°F | 26°C 80°F | 106 mm 4.2 in | — | 11 |
| September | 28°C 82°F | 25°C 76°F | 126 mm 5.0 in | — | 11 |
| October | 22°C 71°F | 19°C 66°F | 235 mm 9.3 in | — | 2 |
| November | 17°C 63°F | 13°C 56°F | 94 mm 3.7 in | — | 12 |
| December | 14°C 57°F | 9°C 49°F | 118 mm 4.6 in | — | 12 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 21 | 1 |
| February | 16 | 0 |
| March | 9 | 3 |
| April | 9 | 2 |
| May | 1 | 2 |
| June | 3 | 2 |
| July | 10 | 4 |
| August | 11 | 1 |
| September | 11 | 6 |
| October | 2 | 8 |
| November | 12 | 3 |
| December | 12 | 3 |
Water Temperatures Data
↑ See chart| Month | Ocean Avg High | Lake Avg High |
|---|---|---|
| January | 19°C 67°F | 12°C 54°F |
| February | 18°C 65°F | 11°C 52°F |
| March | 18°C 64°F | 12°C 53°F |
| April | 19°C 65°F | 15°C 59°F |
| May | 21°C 70°F | 19°C 66°F |
| June | 25°C 78°F | 24°C 75°F |
| July | 29°C 84°F | 27°C 81°F |
| August | 28°C 83°F | 29°C 84°F |
| September | 28°C 83°F | 27°C 80°F |
| October | 28°C 82°F | 23°C 74°F |
| November | 24°C 75°F | 18°C 64°F |
| December | 23°C 73°F | 15°C 60°F |