Peak Sun Hours in Gandajika, Lomami, Democratic Republic of the Congo
- Solar zone
- Zone 4 (excellent)
- Best month
- April (5.4)
- Worst month
- August (4.7)
- Climate
- Equatorial · 25.4°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 4.87 | 7.23 | 2.26 | 2.57 | 24.7 | 78 |
| Feb | 5.15 | 7.39 | 2.63 | 2.59 | 25.4 | 76 |
| Mar | 5.35 | 7.33 | 3.09 | 2.53 | 25.2 | 77 |
| Apr | 5.43 | 6.89 | 3.82 | 2.36 | 25.1 | 78 |
| May | 5.37 | 6.20 | 4.66 | 1.96 | 25.2 | 67 |
| Jun | 5.17 | 5.61 | 4.58 | 1.88 | 24.8 | 51 |
| Jul | 5.01 | 5.55 | 3.96 | 2.03 | 25.5 | 41 |
| Aug | 4.70 | 5.59 | 2.56 | 2.39 | 27.3 | 45 |
| Sep | 4.99 | 6.19 | 2.49 | 2.50 | 26.6 | 64 |
| Oct | 5.27 | 6.92 | 2.67 | 2.64 | 25.4 | 75 |
| Nov | 5.24 | 7.29 | 2.71 | 2.66 | 24.8 | 79 |
| Dec | 4.93 | 7.28 | 2.35 | 2.60 | 24.5 | 79 |
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 4.70 kWh/m²/day, 0.77 system efficiency.
About solar in Gandajika
Gandajika, Democratic Republic of the Congo sits near the equator, where day length is stable year-round and the sun passes close to overhead. Its annual peak sun hours average 5.12 kWh/m²/day, a excellent solar resource by global standards.
The strongest month in Gandajika is April (autumn) at 5.43 kWh/m²/day, and the weakest is August (winter) at 4.7 kWh/m²/day. When sizing a year-round off-grid system, it's standard practice to design against the August value rather than the annual average — otherwise the battery bank runs low during the darkest weeks.
Gandajika'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 Gandajika?
- Gandajika averages 5.12 peak sun hours per day annually, ranging from 4.7 in August to 5.43 in April.
- How many solar panels do I need in Gandajika?
- Panel count depends on your daily load. At Gandajika's annual average of 5.12 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 Gandajika?
- Sizing against Gandajika's worst month (August, 4.7 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 Gandajika's solar resource compare globally?
- Gandajika sits in solar zone 4 out of 5 (where 5 is strongest) at 5.12 kWh/m²/day — excellent by global standards. For reference, top-tier desert sites average ~6.5 and high-latitude cities around 2.5 kWh/m²/day.
- Why doesn't solar output vary much by month in Gandajika?
- Near the equator, day length is nearly constant year-round and the sun stays close to overhead. In Gandajika, monthly PSH ranges just from 4.7 to 5.43 kWh/m²/day — variance is driven by wet-season cloud cover, not day length.
- What tilt angle works best for panels in Gandajika?
- At latitude 7°, panels in Gandajika work best at a low tilt (roughly 7°) or horizontal. Tracking mounts add little benefit this close to the equator.
- How does the wet season affect solar output in Gandajika?
- Equatorial wet seasons reduce output through cloud cover, not day length. Gandajika's worst month (August) still delivers 4.7 kWh/m²/day — design against this value for reliable year-round off-grid use.