Fukuoka vs Nagasaki: which is sunnier?
🇯🇵 Japan vs 🇯🇵 Japan · 90 km apart · long-term climate normals (NASA POWER, 2001–2020)
Fukuoka and Nagasaki are virtually tied for annual sunshine — about 1,752 vs 1,779 hours a year. Nagasaki has the higher Sunshine Score in 4 of 12 months, Fukuoka in 1 (7 within 2 points).
Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.


At a glance
| Fukuoka | Nagasaki | |
|---|---|---|
| Sunshine hours / year | 1,752 | 1,779 |
| Sunniest month | October (69/100) | October (67/100) |
| Nov–Feb average score | 24/100 | 29/100 |
| Jun–Aug average score | 61/100 | 61/100 |
| Rain / year | 1,899 mm | 2,077 mm |
| Warmest sea | 30°C / 86°F | 30°C / 86°F |
| Peak midday UV | 7 (high) | 8 (very high) |
Fukuoka vs Nagasaki month by month
| Month | Sunshine Score | Day high °C | Rain mm | Sea °C | ||||
|---|---|---|---|---|---|---|---|---|
| Fukuoka | Nagasaki | Fukuoka | Nagasaki | Fukuoka | Nagasaki | Fukuoka | Nagasaki | |
| January | 6 | 13 | 9° | 10° | 70 | 71 | 13° | 15° |
| February | 18 | 24 | 11° | 12° | 88 | 99 | 13° | 16° |
| March | 34 | 38 | 14° | 15° | 118 | 131 | 13° | 16° |
| April | 63 | 56 | 20° | 19° | 140 | 167 | 17° | 18° |
| May | 61 | 61 | 25° | 24° | 157 | 186 | 20° | 20° |
| June | 61 | 61 | 27° | 27° | 299 | 333 | 23° | 24° |
| July | 61 | 61 | 31° | 30° | 357 | 352 | 28° | 28° |
| August | 61 | 61 | 32° | 31° | 204 | 225 | 30° | 30° |
| September | 61 | 61 | 28° | 28° | 189 | 201 | 29° | 29° |
| October | 69 | 67 | 22° | 23° | 109 | 117 | 24° | 26° |
| November | 54 | 53 | 17° | 17° | 89 | 103 | 20° | 23° |
| December | 19 | 24 | 11° | 12° | 79 | 92 | 15° | 18° |
The sunnier month by month: Jan Nagasaki · Feb Nagasaki · Mar Nagasaki · Apr Fukuoka · May even · Jun even · Jul even · Aug even · Sep even · Oct even · Nov even · Dec Nagasaki.
When to pick which
- November–February: Nagasaki (average score 29/100 vs 24). Daytime highs are similar (12°C vs 13°C). See the winter sun ranking.
- March–May: too close to call — Fukuoka averages 53/100, Nagasaki 52/100. Daytime highs are similar (20°C vs 19°C).
- June–August: too close to call — Fukuoka averages 61/100, Nagasaki 61/100. Daytime highs are similar (30°C vs 29°C).
- September–October: too close to call — Fukuoka averages 65/100, Nagasaki 64/100. Daytime highs are similar (25°C vs 26°C).
Sea temperature
Both seas peak at 30°C / 86°F. Swimmable water (21°C+): Fukuoka about 5 months a year, Nagasaki about 6 months a year. Month-by-month sea temperatures are in the table above.
Full month-by-month guides: Fukuoka weather by month · Nagasaki weather by month · Best time to visit Japan.
More comparisons: Fukuoka vs Kitakyushu · Fukuoka vs Kumamoto · Fukuoka vs Saga · Nagasaki vs Kumamoto · Nagasaki vs Kagoshima · Nagasaki vs Saga · all head-to-heads