UTC Offset
UTC+09:00
Isa, Japan Snapshot 2026
Where is Isa?
Isa, Japan
- Continent
- Asia
- Country
- Japan
- City
- Isa
- Population
- 24.5K
- Coordinates
- 32.07°, 130.61°
Isa is a city in Japan with a population of approximately 24.5K. Average temperatures range from 3°C (38°F) in January to 31°C (87°F) in August. The best time to visit is April, May, October.
Time in Isa right now
Open full time & time zone page 20:46 46
Tuesday, June 16, 2026
IANA time zone
Asia/Tokyo
Daylight saving
No DST
Next DST change
—
Live weather in Isa
Daylight in Isa today
View full sunrise & sunset page Sunrise
Sunset
Day length
14h 14m
Climate normals for Isa
Long-term monthly averages based on historical data.
January
Poor 
February
Poor March
Fair April best
Wet May best
Excellent June
Wet July
Wet August
Wet September
Wet October best
Excellent November
Good December
Fair | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 10°C / 3°C | 7°C / 0°C | 10days (77 mm) Wet | 6.8h Fair | 77% Humid | 3.9 Moderate | Poor | View Details |
| February | 11°C / 4°C | 9°C / 1°C | 11days (117 mm) Wet | 7.1h Good | 77% Humid | 4.3 Moderate | Poor | View Details |
| March | 16°C / 8°C | 15°C / 5°C | 13days (172 mm) Wet | 7.6h Good | 78% Humid | 5.2 High | Fair | View Details |
| April best | 20°C / 12°C | 20°C / 11°C | 12days (188 mm) Wet | 8h Good | 79% Humid | 5.9 High | Wet | View Details |
| May best | 24°C / 16°C | 25°C / 16°C | 13days (274 mm) Wet | 7.8h Good | 81% Humid | 6.3 High | Excellent | View Details |
| June | 26°C / 20°C | 30°C / 23°C | 19days (475 mm) Wet | 6.6h Fair | 87% Very Muggy | 5.9 High | Wet | View Details |
| July | 30°C / 24°C | 35°C / 29°C | 21days (368 mm) Wet | 8.5h Good | 88% Very Muggy | 7.4 Very High | Wet | View Details |
| August | 31°C / 25°C | 36°C / 29°C | 17days (229 mm) Wet | 9.6h Good | 85% Humid | 7.2 Very High | Wet | View Details |
| September | 28°C / 22°C | 33°C / 26°C | 17days (220 mm) Wet | 8.5h Good | 85% Humid | 6.6 High | Wet | View Details |
| October best | 24°C / 17°C | 25°C / 17°C | 11days (137 mm) Wet | 7.9h Good | 81% Humid | 5 Moderate | Excellent | View Details |
| November | 18°C / 10°C | 17°C / 9°C | 9days (109 mm) Wet | 7.5h Good | 80% Humid | 4.1 Moderate | Good | View Details |
| December | 12°C / 5°C | 9°C / 2°C | 8days (74 mm) Wet | 6.9h Fair | 78% Humid | 3.4 Moderate | Fair | View Details |
Monthly Temperatures
HighLow
Line chart showing monthly temperatures. Jan: 10°C / 3°C . Feb: 11°C / 4°C . Mar: 16°C / 8°C . Apr: 20°C / 12°C . May: 24°C / 16°C . Jun: 26°C / 20°C . Jul: 30°C / 24°C . Aug: 31°C / 25°C . Sep: 28°C / 22°C . Oct: 24°C / 17°C . Nov: 18°C / 10°C . Dec: 12°C / 5°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 77 mm. Feb: 117 mm. Mar: 172 mm. Apr: 188 mm. May: 274 mm. Jun: 475 mm. Jul: 368 mm. Aug: 229 mm. Sep: 220 mm. Oct: 137 mm. Nov: 109 mm. Dec: 74 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 77%. Feb: 77%. Mar: 78%. Apr: 79%. May: 81%. Jun: 87%. Jul: 88%. Aug: 85%. Sep: 85%. Oct: 81%. Nov: 80%. Dec: 78%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 15 km/h . Feb: 16 km/h . Mar: 15 km/h . Apr: 14 km/h . May: 13 km/h . Jun: 13 km/h . Jul: 13 km/h . Aug: 12 km/h . Sep: 12 km/h . Oct: 12 km/h . Nov: 13 km/h . Dec: 15 km/h .
Sea Temperature
Sea Temperatureswim
Line chart showing monthly sea temperature. Jan: 14°C . Feb: 13°C . Mar: 14°C . Apr: 16°C . May: 19°C . Jun: 23°C . Jul: 28°C . Aug: 30°C . Sep: 29°C . Oct: 26°C . Nov: 22°C . Dec: 17°C .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 4. Feb: UV 4. Mar: UV 5. Apr: UV 6. May: UV 6. Jun: UV 6. Jul: UV 7. Aug: UV 7. Sep: UV 7. Oct: UV 5. Nov: UV 4. Dec: UV 3.
Frequently Asked Questions
Isa has a population of approximately 24.5K.
The best months to visit Isa are April, May, October, when temperatures are pleasant and rainfall is lower.
Isa receives approximately 2440mm of rainfall annually across 161 rainy days.
Isa is located in Japan, in the Asia region.