Thiruvananthapuram vs Colombo: which is sunnier?
🇮🇳 India vs 🇱🇰 Sri Lanka · 357 km apart · long-term climate normals (NASA POWER, 2001–2020)
Colombo is the sunnier overall: about 2,876 hours of sunshine a year to Thiruvananthapuram's 2,604. Month by month it's balanced: each has the higher Sunshine Score in 3 months, with 6 within 2 points.
Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.
At a glance
| Thiruvananthapuram | Colombo | |
|---|---|---|
| Sunshine hours / year | 2,604 | 2,876 |
| Sunniest month | January (91/100) | February (83/100) |
| Nov–Feb average score | 81/100 | 75/100 |
| Jun–Aug average score | 67/100 | 74/100 |
| Rain / year | 1,795 mm | 2,001 mm |
| Warmest sea | 31°C / 88°F | 32°C / 90°F |
| Peak midday UV | 12 (extreme) | 12 (extreme) |
Thiruvananthapuram vs Colombo month by month
| Month | Sunshine Score | Day high °C | Rain mm | Sea °C | ||||
|---|---|---|---|---|---|---|---|---|
| Thiruvananthapuram | Colombo | Thiruvananthapuram | Colombo | Thiruvananthapuram | Colombo | Thiruvananthapuram | Colombo | |
| January | 91 | 82 | 31° | 29° | 16 | 76 | 30° | 29° |
| February | 81 | 83 | 33° | 31° | 21 | 71 | 30° | 30° |
| March | 76 | 75 | 33° | 31° | 53 | 115 | 30° | 31° |
| April | 72 | 68 | 32° | 31° | 123 | 226 | 31° | 32° |
| May | 67 | 68 | 30° | 30° | 202 | 224 | 30° | 31° |
| June | 67 | 70 | 29° | 29° | 249 | 143 | 28° | 29° |
| July | 67 | 78 | 28° | 28° | 188 | 99 | 26° | 30° |
| August | 67 | 75 | 28° | 28° | 162 | 113 | 26° | 29° |
| September | 67 | 68 | 28° | 29° | 206 | 162 | 26° | 30° |
| October | 67 | 68 | 29° | 29° | 291 | 292 | 29° | 29° |
| November | 67 | 68 | 29° | 29° | 222 | 305 | 29° | 30° |
| December | 83 | 68 | 29° | 29° | 62 | 175 | 29° | 29° |
The sunnier month by month: Jan Thiruvananthapuram · Feb even · Mar even · Apr Thiruvananthapuram · May even · Jun Colombo · Jul Colombo · Aug Colombo · Sep even · Oct even · Nov even · Dec Thiruvananthapuram.
When to pick which
- November–February: Thiruvananthapuram (average score 81/100 vs 75). Daytime highs are similar (31°C vs 30°C). See the winter sun ranking.
- March–May: too close to call — Thiruvananthapuram averages 72/100, Colombo 70/100. Daytime highs are similar (32°C vs 31°C).
- June–August: Colombo (average score 74/100 vs 67). Daytime highs are similar (28°C vs 28°C).
- September–October: too close to call — Thiruvananthapuram averages 67/100, Colombo 68/100. Daytime highs are similar (29°C vs 29°C).
Sea temperature
Colombo's sea gets warmer: 32°C / 90°F at its peak vs 31°C. Swimmable water (21°C+): Thiruvananthapuram all year, Colombo all year. Month-by-month sea temperatures are in the table above.
Full month-by-month guides: Thiruvananthapuram weather by month · Colombo weather by month · Best time to visit India.
More comparisons: Thiruvananthapuram vs Coimbatore · Thiruvananthapuram vs Kochi · Thiruvananthapuram vs Calicut · Colombo vs Kochi · Colombo vs Tiruchirappalli · Colombo vs Malé · all head-to-heads