Tiruchirappalli vs Colombo: which is sunnier?
🇮🇳 India vs 🇱🇰 Sri Lanka · 418 km apart · long-term climate normals (NASA POWER, 2001–2020)
Colombo is the sunnier overall: about 2,876 hours of sunshine a year to Tiruchirappalli's 2,755. Colombo has the higher Sunshine Score in 8 of 12 months, Tiruchirappalli in 2 (2 within 2 points).
Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.

At a glance
| Tiruchirappalli | Colombo | |
|---|---|---|
| Sunshine hours / year | 2,755 | 2,876 |
| Sunniest month | January (94/100) | February (83/100) |
| Nov–Feb average score | 80/100 | 75/100 |
| Jun–Aug average score | 62/100 | 74/100 |
| Rain / year | 830 mm | 2,001 mm |
| Peak midday UV | 11 (extreme) | 12 (extreme) |
Tiruchirappalli vs Colombo month by month
| Month | Sunshine Score | Day high °C | Rain mm | |||
|---|---|---|---|---|---|---|
| Tiruchirappalli | Colombo | Tiruchirappalli | Colombo | Tiruchirappalli | Colombo | |
| January | 94 | 82 | 31° | 29° | 9 | 76 |
| February | 75 | 83 | 34° | 31° | 8 | 71 |
| March | 46 | 75 | 37° | 31° | 16 | 115 |
| April | 36 | 68 | 38° | 31° | 34 | 226 |
| May | 49 | 68 | 36° | 30° | 76 | 224 |
| June | 62 | 70 | 35° | 29° | 40 | 143 |
| July | 59 | 78 | 35° | 28° | 59 | 99 |
| August | 64 | 75 | 34° | 28° | 84 | 113 |
| September | 61 | 68 | 34° | 29° | 104 | 162 |
| October | 68 | 68 | 32° | 29° | 163 | 292 |
| November | 68 | 68 | 29° | 29° | 170 | 305 |
| December | 83 | 68 | 29° | 29° | 67 | 175 |
The sunnier month by month: Jan Tiruchirappalli · Feb Colombo · Mar Colombo · Apr Colombo · May Colombo · Jun Colombo · Jul Colombo · Aug Colombo · Sep Colombo · Oct even · Nov even · Dec Tiruchirappalli.
When to pick which
- November–February: Tiruchirappalli (average score 80/100 vs 75). Daytime highs are similar (31°C vs 30°C). See the winter sun ranking.
- March–May: Colombo (average score 70/100 vs 44). Tiruchirappalli is the warmer, around 37°C daytime highs vs 31°C.
- June–August: Colombo (average score 74/100 vs 62). Tiruchirappalli is the warmer, around 35°C daytime highs vs 28°C.
- September–October: Colombo (average score 68/100 vs 65). Tiruchirappalli is the warmer, around 33°C daytime highs vs 29°C.
Full month-by-month guides: Tiruchirappalli weather by month · Colombo weather by month · Best time to visit India.
More comparisons: Tiruchirappalli vs Bengaluru · Tiruchirappalli vs Chennai · Tiruchirappalli vs Coimbatore · Colombo vs Kochi · Colombo vs Thiruvananthapuram · Colombo vs Malé · all head-to-heads