133 places · sun position · panel angle
Solar data for Bangladesh
Across the 133 places in Bangladesh the best fixed tilt for solar panels runs from 23° in Taluker Char Doani to 28° in Sylhet, and flat ground gets 4.4 to 4.9 peak sun hours a day. Every number is computed for each place.
Solar power in Bangladesh at a glance
Averages over 133 places with climate data, for a fixed array facing south.
- 4.36–4.47
- 4.47–4.58
- 4.58–4.69
- 4.69–4.80
- 4.80–4.91
Peak sun hours a day on flat ground. Each dot is one place.
The sunniest places in Bangladesh, with 4.91 peak sun hours a day on flat ground, are Hāthazāri and one other place; the least sunny is Panchagarh with 4.36. A 1 kWp array at its best angle makes from 1,372 kWh a year in Gafargaon to 1,548 kWh in Hāthazāri — 1,428 kWh on average.
The best year-round tilt runs from 23° in Taluker Char Doani to 28° in Sylhet. Off-grid systems are sized for the darkest month and do better steeper, at 10° on average: at 70° that month brings 1.54 kWh per kWp a day in Teknāf and 1.86 kWh in Pār Naogaon.
Size an off-grid system or open any place below for its sun path, monthly table and tilt curve.
Sunniest places in Bangladesh
Ranked by peak sun hours on flat ground: the yearly average of a day's sunshine energy (NASA POWER climatology). Output: 1 kWp at its best year-round angle.
| Rank | Place | Region | Sun hours/day | kWh per kWp a year | Best tilt |
|---|---|---|---|---|---|
| 1 | Hāthazāri | Chittagong | 4.91 | 1,548 | 26° |
| 1 | Sandwīp | Chittagong | 4.91 | 1,543 | 26° |
| 3 | Raojān | Chittagong | 4.90 | 1,546 | 26° |
| 3 | Chattogram | Chittagong | 4.90 | 1,543 | 26° |
| 5 | Patiya | Chittagong | 4.89 | 1,541 | 26° |
| 6 | Bibir Hat | Chittagong | 4.88 | 1,540 | 26° |
| 6 | Dohazāri | Chittagong | 4.88 | 1,537 | 26° |
| 8 | Rangamati | Chittagong | 4.87 | 1,539 | 26° |
| 8 | Bāndarban | Chittagong | 4.87 | 1,538 | 26° |
| 8 | Sātkania | Chittagong | 4.87 | 1,535 | 26° |
Least sunny places in Bangladesh
| Rank | Place | Region | Sun hours/day | kWh per kWp a year | Best tilt |
|---|---|---|---|---|---|
| 129 | Nageswari | Rangpur Division | 4.39 | 1,407 | 28° |
| 129 | Gafargaon | Mymensingh Division | 4.39 | 1,372 | 26° |
| 131 | Netrakona | Mymensingh Division | 4.38 | 1,388 | 27° |
| 132 | Mymensingh | Mymensingh Division | 4.37 | 1,374 | 26° |
| 133 | Panchagarh | Rangpur Division | 4.36 | 1,387 | 27° |
Solar by region in Bangladesh
Averages of the places in each region, sunniest first. Darkest month: what 1 kWp of off-grid panels at 70° makes a day in the worst month of the year.
| Region | Places | Sun hours/day | kWh per kWp a year | Best tilt | Darkest month at 70° | Sunniest place |
|---|---|---|---|---|---|---|
| Chittagong | 29 | 4.76 | 1,497 | 26° | 1.74 kWh | Hāthazāri |
| Khulna Division | 17 | 4.58 | 1,416 | 24° | 1.75 kWh | Uttar Char Fasson |
| Barisal Division | 15 | 4.55 | 1,406 | 24° | 1.67 kWh | Lālmohan |
| Sylhet Division | 7 | 4.53 | 1,449 | 27° | 1.75 kWh | Srimangal |
| Rajshahi Division | 15 | 4.52 | 1,408 | 25° | 1.85 kWh | Pābna |
| Dhaka Division | 31 | 4.50 | 1,399 | 25° | 1.76 kWh | Tungipara |
| Rangpur Division | 12 | 4.46 | 1,414 | 27° | 1.82 kWh | Parbatipur |
| Mymensingh Division | 7 | 4.41 | 1,388 | 26° | 1.76 kWh | Sarishābāri |
Largest places in Bangladesh at a glance
| Place | Latitude | Best tilt | Off-grid tilt | Sun hours/day (flat) |
|---|---|---|---|---|
| Dhaka | 23.7° N | 25° | 13° | 4.48 |
| Chattogram | 22.3° N | 26° | 3° | 4.90 |
| Gazipur | 24.0° N | 25° | 13° | 4.45 |
| Khulna | 22.8° N | 24° | 8° | 4.58 |
| Rangpur | 25.7° N | 27° | 13° | 4.47 |
| Rajshahi | 24.4° N | 24° | 19° | 4.52 |
| Comilla | 23.5° N | 26° | 7° | 4.67 |
| Mohammadpur | 24.9° N | 25° | 18° | 4.52 |
| Hāthazāri | 22.5° N | 26° | 4° | 4.91 |
| Bāndarban | 22.2° N | 26° | 1° | 4.87 |
| Shibganj | 25.0° N | 26° | 15° | 4.53 |
| Natore | 24.4° N | 25° | 17° | 4.52 |
| Kafrul | 23.8° N | 25° | 13° | 4.48 |
| Tungi | 23.9° N | 25° | 13° | 4.46 |
| Bhatara | 23.8° N | 25° | 13° | 4.47 |
| Savar | 23.8° N | 25° | 13° | 4.48 |
| Narsingdi | 23.9° N | 25° | 11° | 4.50 |
| Nagar Naluākot | 24.2° N | 26° | 11° | 4.47 |
| Bagerhat | 22.7° N | 24° | 7° | 4.57 |
| Brāhmanbāria | 24.0° N | 26° | 8° | 4.58 |
Daylight and clock time in Bangladesh
In Panchagarh (26.3° N), the northernmost place, the longest day of the year lasts 13 h 48 min and the shortest 10 h 29 min; in Teknāf (20.9° N), the southernmost, 13 h 24 min and 10 h 52 min. Bangladesh does not use daylight saving time: the clocks stay the same all year.
| Time zone | Places | UTC offset | Clocks change in 2026 |
|---|---|---|---|
| Asia/Dhaka | 133 | UTC+6 | no daylight saving time |