Peak Sun Hours in Jessore, Khulna Division, Bangladesh
- Solar zone
- Zone 3 (good)
- Best month
- April (5.7)
- Worst month
- December (3.6)
- Climate
- Tropical · 25.8°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 3.67 | 4.05 | 3.41 | 1.64 | 17.7 | 61 |
| Feb | 4.63 | 4.93 | 4.16 | 1.88 | 22.4 | 50 |
| Mar | 5.36 | 5.82 | 4.13 | 2.30 | 27.6 | 48 |
| Apr | 5.69 | 6.43 | 3.49 | 2.73 | 31.0 | 58 |
| May | 5.50 | 6.66 | 2.78 | 2.95 | 30.8 | 70 |
| Jun | 4.62 | 6.73 | 1.61 | 2.93 | 29.3 | 84 |
| Jul | 4.40 | 6.96 | 1.48 | 2.87 | 28.4 | 89 |
| Aug | 4.58 | 6.73 | 1.82 | 2.87 | 28.1 | 90 |
| Sep | 4.49 | 6.12 | 2.31 | 2.57 | 27.7 | 90 |
| Oct | 4.44 | 5.37 | 3.66 | 1.92 | 26.1 | 85 |
| Nov | 4.24 | 4.54 | 4.71 | 1.48 | 22.2 | 78 |
| Dec | 3.56 | 3.90 | 3.83 | 1.43 | 18.4 | 73 |
GHI, Clear-sky, DNI, DHI in kWh/m²/day. Data: NASA POWER climatology (long-term monthly averages).
Off-grid calculator
Add appliances
- Add an appliance to size a system.
Sizing
- Daily load
- 0.00 kWh
- Panel wattage
- 0 W
- Panel count (400W modules)
- 0
- Battery bank
- 0.0 kWh
Sizing against worst-month PSH of 3.56 kWh/m²/day, 0.77 system efficiency.
About solar in Jessore
Jessore, Bangladesh has a warm, tropical climate with a distinct wet and dry season. Its annual peak sun hours average 4.6 kWh/m²/day, a good solar resource by global standards.
The strongest month in Jessore is April (spring) at 5.69 kWh/m²/day, and the weakest is December (winter) at 3.56 kWh/m²/day. When sizing a year-round off-grid system, it's standard practice to design against the December value rather than the annual average — otherwise the battery bank runs low during the darkest weeks.
Jessore's solar conditions are well within the range where off-grid PV is a straightforward engineering exercise with standard-sized arrays and lithium batteries.
FAQ
- What are the peak sun hours in Jessore?
- Jessore averages 4.6 peak sun hours per day annually, ranging from 3.56 in December to 5.69 in April.
- How many solar panels do I need in Jessore?
- Panel count depends on your daily load. At Jessore's annual average of 4.6 kWh/m²/day, a 5 kWh/day load needs roughly 4 × 400 W panels. Use the calculator above for your actual load.
- What size battery do I need in Jessore?
- Sizing against Jessore's worst month (December, 3.56 kWh/m²/day) with 2 days of autonomy at 80% depth of discharge, a 5 kWh/day load needs about a 12.5 kWh battery bank.
- How does Jessore's solar resource compare globally?
- Jessore sits in solar zone 3 out of 5 (where 5 is strongest) at 4.6 kWh/m²/day — good by global standards. For reference, top-tier desert sites average ~6.5 and high-latitude cities around 2.5 kWh/m²/day.
- How does the wet season affect solar generation in Jessore?
- Jessore's dry-season output peaks at 5.69 kWh/m²/day in April; the wet season drops it to 3.56 in December. That ~46% swing is a key sizing consideration.
- Can solar panels survive tropical storms in Jessore?
- Most tier-1 PV panels are rated for 140+ mph wind loads; mounting hardware usually fails first. In cyclone-prone regions like Bangladesh, specify IEC 61215-certified panels and anchor-bolt mounts rather than ballasted.
- What's the dry-to-wet output gap in Jessore?
- Jessore swings from 5.69 kWh/m²/day in April (dry) to 3.56 in December (wet) — roughly 46%. Year-round off-grid systems must size against the wet-season minimum.