Chattogram (Chittagong) vs Sylhet: which is sunnier?
🇧🇩 Bangladesh vs 🇧🇩 Bangladesh · 302 km apart · long-term climate normals (NASA POWER, 2001–2020)
Chattogram (Chittagong) is the sunnier overall: about 2,518 hours of sunshine a year to Sylhet's 2,257. Chattogram (Chittagong) has the higher Sunshine Score in 2 of 12 months, Sylhet in 1 (9 within 2 points).
Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.


At a glance
| Chattogram (Chittagong) | Sylhet | |
|---|---|---|
| Sunshine hours / year | 2,518 | 2,257 |
| Sunniest month | January (92/100) | January (90/100) |
| Nov–Feb average score | 87/100 | 88/100 |
| Jun–Aug average score | 66/100 | 65/100 |
| Rain / year | 4,340 mm | 3,707 mm |
| Peak midday UV | 9 (very high) | 8 (very high) |
Chattogram (Chittagong) vs Sylhet month by month
| Month | Sunshine Score | Day high °C | Rain mm | |||
|---|---|---|---|---|---|---|
| Chattogram (Chittagong) | Sylhet | Chattogram (Chittagong) | Sylhet | Chattogram (Chittagong) | Sylhet | |
| January | 92 | 90 | 23° | 23° | 10 | 11 |
| February | 87 | 86 | 26° | 26° | 39 | 34 |
| March | 82 | 74 | 29° | 31° | 62 | 98 |
| April | 66 | 65 | 31° | 32° | 171 | 377 |
| May | 66 | 65 | 31° | 32° | 428 | 540 |
| June | 66 | 65 | 30° | 31° | 749 | 701 |
| July | 66 | 65 | 29° | 31° | 1138 | 693 |
| August | 66 | 65 | 29° | 31° | 732 | 545 |
| September | 66 | 65 | 29° | 31° | 508 | 432 |
| October | 66 | 65 | 29° | 30° | 400 | 231 |
| November | 77 | 88 | 27° | 27° | 89 | 24 |
| December | 91 | 88 | 24° | 24° | 14 | 21 |
The sunnier month by month: Jan even · Feb even · Mar Chattogram (Chittagong) · Apr even · May even · Jun even · Jul even · Aug even · Sep even · Oct even · Nov Sylhet · Dec Chattogram (Chittagong).
When to pick which
- November–February: too close to call — Chattogram (Chittagong) averages 87/100, Sylhet 88/100. Daytime highs are similar (25°C vs 25°C). See the winter sun ranking.
- March–May: Chattogram (Chittagong) (average score 71/100 vs 68). Sylhet is the warmer, around 32°C daytime highs vs 30°C.
- June–August: too close to call — Chattogram (Chittagong) averages 66/100, Sylhet 65/100. Sylhet is the warmer, around 31°C daytime highs vs 29°C.
- September–October: too close to call — Chattogram (Chittagong) averages 66/100, Sylhet 65/100. Sylhet is the warmer, around 31°C daytime highs vs 29°C.
Full month-by-month guides: Chattogram (Chittagong) weather by month · Sylhet weather by month · Best time to visit Bangladesh.
More comparisons: Chattogram (Chittagong) vs Dhaka · Chattogram (Chittagong) vs Cox's Bazar · Chattogram (Chittagong) vs Imphal · Sylhet vs Dhaka · Sylhet vs Guwahati · Sylhet vs Imphal · all head-to-heads