Iki weather by month & the best time to visit
🇯🇵 Japan · beach resort · humid subtropical climate
The best time to visit Iki is October — its sunniest month (Sunshine Score 68/100), with May and June close behind. Iki averages about 1,740 hours of sunshine a year. Daytime highs around 22°C / 72°F and roughly 112 mm of rain in October.
Jump to: month-by-month table · sea temperature · nearby alternatives · embed this data
- Sun hours / year
- 1,740
- Sunniest month
- October
- Peak score
- 68/100
- Rain / year
- 1,963 mm
- Midday UV at peak
- 8 (very high)
- Sea at warmest
- 30°C / 86°F
- Population
- 30k
- Elevation
- 12 m

When is the best time to visit Iki?
For sunshine, the best time to visit Iki is October, then May and June. The dullest month is January (13/100, 69 mm of rain). The full month-by-month picture is in the table below.
How sunny is Iki?
Iki isn't a sunny place by world standards: about 1,740 hours of sunshine a year. 55 Sunshine Score points separate October (68) from January (13), so the month you pick matters. It ranks #45 of 79 destinations in Japan for annual sunshine, below the national median of 1,773 hours. Rain has a clear season: the wettest stretch, around July, carries about 44% of the annual 1,963 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 13 | 10° / 50°F | 5° / 41°F | 69 mm | 2 | 15° / 59°F |
| February | 18 | 11° / 52°F | 6° / 43°F | 89 mm | 3 | 14° / 57°F |
| March | 27 | 13° / 55°F | 8° / 46°F | 124 mm | 4 | 14° / 57°F |
| April | 51 | 18° / 64°F | 12° / 54°F | 158 mm | 6 | 17° / 63°F |
| May | 61 | 22° / 72°F | 16° / 61°F | 175 mm | 6 | 19° / 66°F |
| June | 61 | 25° / 77°F | 20° / 68°F | 288 mm | 6 | 22° / 72°F |
| July | 61 | 28° / 82°F | 24° / 75°F | 347 mm | 7 | 26° / 79°F |
| August | 61 | 30° / 86°F | 25° / 77°F | 228 mm | 8 | 30° / 86°F |
| September | 61 | 27° / 81°F | 22° / 72°F | 196 mm | 6 | 28° / 82°F |
| October | 68 | 22° / 72°F | 18° / 64°F | 112 mm | 5 | 25° / 77°F |
| November | 53 | 17° / 63°F | 13° / 55°F | 95 mm | 3 | 22° / 72°F |
| December | 25 | 12° / 54°F | 8° / 46°F | 82 mm | 2 | 18° / 64°F |
Sea temperature in Iki by month
The sea off Iki is warmest in August at around 30°C / 86°F, and coolest in February at 14°C / 57°F. The water sits at a comfortable 21°C or warmer roughly 6 months a year. Month-by-month sea-surface temperatures are in the Sea column of the table above.
See Iki on the interactive sunshine globe →
Nearby places for sunshine
- Fukuoka Japan · 64 km · best in Oct · 1,752 h sun/yr
- Saga Japan · 82 km · best in Oct · 1,752 h sun/yr
- Nagasaki Japan · 93 km · best in Oct · 1,779 h sun/yr
- Kitakyushu Japan · 116 km · best in Oct · 1,801 h sun/yr
- Ube Japan · 139 km · best in Oct · 1,801 h sun/yr
- Kumamoto Japan · 142 km · best in Oct · 1,845 h sun/yr
Nearest destinations
- Tsushima Japan · 73 km · 1,900 h sun/yr · best in Oct
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