UTC Offset
UTC+09:00
Iyo, Japan Snapshot 2026
Where is Iyo?
Iyo, Japan
- Continent
- Asia
- Country
- Japan
- City
- Iyo
- Population
- 35.1K
- Coordinates
- 33.75°, 132.70°
Iyo is a city in Japan with a population of approximately 35.1K. Average temperatures range from 4°C (39°F) in January to 31°C (88°F) in August. The best time to visit is May, October.
Time in Iyo right now
Open full time & time zone page 00:25 25
Wednesday, July 1, 2026
IANA time zone
Asia/Tokyo
Daylight saving
No DST
Next DST change
—
Live weather in Iyo
Daylight in Iyo today
View full sunrise & sunset page Sunrise
Sunset
Day length
14h 22m
Climate normals for Iyo
Long-term monthly averages based on historical data.
January
Poor 
February
Poor March
Fair April
Good May best
Excellent June
Wet July
Wet August
Poor September
Wet October best
Excellent November
Good December
Fair | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 9°C / 4°C | 6°C / 0°C | 11days (69 mm) Wet | 7.7h Good | 74% Muggy | 3.2 Moderate | Poor | View Details |
| February | 10°C / 4°C | 7°C / 0°C | 10days (83 mm) Wet | 8h Good | 74% Muggy | 4.2 Moderate | Poor | View Details |
| March | 15°C / 7°C | 13°C / 5°C | 12days (124 mm) Wet | 8.7h Good | 75% Muggy | 5.3 High | Fair | View Details |
| April | 19°C / 11°C | 19°C / 10°C | 10days (135 mm) Wet | 8.9h Good | 76% Humid | 6.3 High | Good | View Details |
| May best | 23°C / 15°C | 25°C / 16°C | 11days (180 mm) Wet | 9h Good | 78% Humid | 6.6 High | Excellent | View Details |
| June | 26°C / 20°C | 30°C / 23°C | 16days (275 mm) Wet | 8h Good | 84% Humid | 6.4 High | Wet | View Details |
| July | 30°C / 24°C | 36°C / 29°C | 17days (269 mm) Wet | 9.6h Good | 85% Humid | 7.6 Very High | Wet | View Details |
| August | 31°C / 25°C | 38°C / 31°C | 15days (171 mm) Wet | 10.3h Excellent | 82% Humid | 7.2 Very High | Poor | View Details |
| September | 28°C / 23°C | 33°C / 26°C | 16days (209 mm) Wet | 8.3h Good | 84% Humid | 6.6 High | Wet | View Details |
| October best | 23°C / 17°C | 24°C / 17°C | 10days (138 mm) Wet | 8h Good | 79% Humid | 4.9 Moderate | Excellent | View Details |
| November | 17°C / 11°C | 16°C / 9°C | 9days (74 mm) Wet | 8h Good | 78% Humid | 3.8 Moderate | Good | View Details |
| December | 11°C / 6°C | 9°C / 3°C | 10days (64 mm) Wet | 7.4h Good | 75% Muggy | 3.1 Moderate | Fair | View Details |
Monthly Temperatures
High Low
Line chart showing monthly temperatures. Jan: 9°C / 4°C . Feb: 10°C / 4°C . Mar: 15°C / 7°C . Apr: 19°C / 11°C . May: 23°C / 15°C . Jun: 26°C / 20°C . Jul: 30°C / 24°C . Aug: 31°C / 25°C . Sep: 28°C / 23°C . Oct: 23°C / 17°C . Nov: 17°C / 11°C . Dec: 11°C / 6°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 69 mm. Feb: 83 mm. Mar: 124 mm. Apr: 135 mm. May: 180 mm. Jun: 275 mm. Jul: 269 mm. Aug: 171 mm. Sep: 209 mm. Oct: 138 mm. Nov: 74 mm. Dec: 64 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 74%. Feb: 74%. Mar: 75%. Apr: 76%. May: 78%. Jun: 84%. Jul: 85%. Aug: 82%. Sep: 84%. Oct: 79%. Nov: 78%. Dec: 75%.
Monthly Wind Speed
Wind Speed Gusts
Bar chart showing monthly wind speed. Jan: 16 km/h . Feb: 16 km/h . Mar: 15 km/h . Apr: 13 km/h . May: 12 km/h . Jun: 11 km/h . Jul: 10 km/h . Aug: 11 km/h . Sep: 12 km/h . Oct: 13 km/h . Nov: 13 km/h . Dec: 16 km/h .
Sea Temperature
Sea Temperature swim
Line chart showing monthly sea temperature. Jan: 13°C . Feb: 12°C . Mar: 14°C . Apr: 16°C . May: 18°C . Jun: 22°C . Jul: 27°C . Aug: 29°C . Sep: 28°C . Oct: 24°C . Nov: 21°C . Dec: 16°C .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 3. Feb: UV 4. Mar: UV 5. Apr: UV 6. May: UV 7. Jun: UV 6. Jul: UV 8. Aug: UV 7. Sep: UV 7. Oct: UV 5. Nov: UV 4. Dec: UV 3.
Frequently Asked Questions
Iyo has a population of approximately 35.1K.
The best months to visit Iyo are May, October, when temperatures are pleasant and rainfall is lower.
Iyo receives approximately 1791mm of rainfall annually across 147 rainy days.
Iyo is located in Japan, in the Asia region.