Vientiane vs Phitsanulok: which is sunnier?
🇱🇦 Laos vs 🇹🇭 Thailand · 277 km apart · long-term climate normals (NASA POWER, 2001–2020)
Vientiane and Phitsanulok are virtually tied for annual sunshine — about 2,437 vs 2,511 hours a year. Vientiane has the higher Sunshine Score in 6 of 12 months; the other 6 are within 2 points.
Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.
At a glance
| Vientiane | Phitsanulok | |
|---|---|---|
| Sunshine hours / year | 2,437 | 2,511 |
| Sunniest month | January (92/100) | January (92/100) |
| Nov–Feb average score | 91/100 | 82/100 |
| Jun–Aug average score | 66/100 | 64/100 |
| Rain / year | 1,215 mm | 1,243 mm |
| Peak midday UV | 10 (very high) | 10 (very high) |
Vientiane vs Phitsanulok month by month
| Month | Sunshine Score | Day high °C | Rain mm | |||
|---|---|---|---|---|---|---|
| Vientiane | Phitsanulok | Vientiane | Phitsanulok | Vientiane | Phitsanulok | |
| January | 92 | 92 | 28° | 32° | 8 | 11 |
| February | 91 | 55 | 32° | 36° | 13 | 10 |
| March | 61 | 35 | 35° | 38° | 35 | 31 |
| April | 41 | 25 | 37° | 39° | 61 | 61 |
| May | 53 | 46 | 34° | 35° | 168 | 178 |
| June | 66 | 60 | 32° | 33° | 170 | 162 |
| July | 66 | 66 | 31° | 32° | 203 | 163 |
| August | 66 | 66 | 30° | 31° | 246 | 203 |
| September | 66 | 66 | 30° | 31° | 204 | 251 |
| October | 78 | 68 | 30° | 31° | 85 | 140 |
| November | 90 | 89 | 29° | 31° | 16 | 24 |
| December | 92 | 92 | 27° | 30° | 6 | 9 |
The sunnier month by month: Jan even · Feb Vientiane · Mar Vientiane · Apr Vientiane · May Vientiane · Jun Vientiane · Jul even · Aug even · Sep even · Oct Vientiane · Nov even · Dec even.
When to pick which
- November–February: Vientiane (average score 91/100 vs 82). Phitsanulok is the warmer, around 32°C daytime highs vs 29°C. See the winter sun ranking.
- March–May: Vientiane (average score 52/100 vs 35). Phitsanulok is the warmer, around 37°C daytime highs vs 35°C.
- June–August: too close to call — Vientiane averages 66/100, Phitsanulok 64/100. Daytime highs are similar (31°C vs 32°C).
- September–October: Vientiane (average score 72/100 vs 67). Daytime highs are similar (30°C vs 31°C).
Full month-by-month guides: Vientiane weather by month · Phitsanulok weather by month · Best time to visit Thailand.
More comparisons: Vientiane vs Khon Kaen · Vientiane vs Udon Thani · Phitsanulok vs Bangkok · Phitsanulok vs Yangon · Phitsanulok vs Chiang Mai · all head-to-heads