Peak Sun Hours in Enugu, Enugu State, Nigeria
- Solar zone
- Zone 3 (good)
- Best month
- January (5.2)
- Worst month
- August (3.9)
- Climate
- Equatorial · 25.4°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 5.17 | 5.58 | 3.09 | 2.66 | 23.9 | 67 |
| Feb | 4.95 | 5.66 | 2.09 | 2.83 | 25.9 | 74 |
| Mar | 5.03 | 6.12 | 1.89 | 2.85 | 26.7 | 83 |
| Apr | 5.03 | 6.55 | 1.98 | 2.80 | 26.7 | 86 |
| May | 4.93 | 6.59 | 2.19 | 2.65 | 26.2 | 88 |
| Jun | 4.49 | 6.34 | 1.73 | 2.53 | 25.4 | 89 |
| Jul | 4.03 | 6.41 | 1.32 | 2.36 | 24.8 | 89 |
| Aug | 3.91 | 6.61 | 1.15 | 2.35 | 24.7 | 89 |
| Sep | 4.24 | 6.78 | 1.39 | 2.46 | 24.9 | 90 |
| Oct | 4.67 | 6.56 | 2.08 | 2.51 | 25.2 | 89 |
| Nov | 5.09 | 6.02 | 3.27 | 2.39 | 25.6 | 82 |
| Dec | 5.15 | 5.60 | 3.66 | 2.35 | 24.3 | 71 |
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 3.91 kWh/m²/day, 0.77 system efficiency.
About solar in Enugu
Enugu, Nigeria sits near the equator, where day length is stable year-round and the sun passes close to overhead. Its annual peak sun hours average 4.72 kWh/m²/day, a good solar resource by global standards.
The strongest month in Enugu is January (winter) at 5.17 kWh/m²/day, and the weakest is August (summer) at 3.91 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.
Enugu'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 Enugu?
- Enugu averages 4.72 peak sun hours per day annually, ranging from 3.91 in August to 5.17 in January.
- How many solar panels do I need in Enugu?
- Panel count depends on your daily load. At Enugu's annual average of 4.72 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 Enugu?
- Sizing against Enugu's worst month (August, 3.91 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 Enugu's solar resource compare globally?
- Enugu sits in solar zone 3 out of 5 (where 5 is strongest) at 4.72 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.
- Why doesn't solar output vary much by month in Enugu?
- Near the equator, day length is nearly constant year-round and the sun stays close to overhead. In Enugu, monthly PSH ranges just from 3.91 to 5.17 kWh/m²/day — variance is driven by wet-season cloud cover, not day length.
- What tilt angle works best for panels in Enugu?
- At latitude 6°, panels in Enugu work best at a low tilt (roughly 6°) or horizontal. Tracking mounts add little benefit this close to the equator.
- How does the wet season affect solar output in Enugu?
- Equatorial wet seasons reduce output through cloud cover, not day length. Enugu's worst month (August) still delivers 3.91 kWh/m²/day — design against this value for reliable year-round off-grid use.