Peak Sun Hours in Yenagoa, Bayelsa State, Nigeria
- Solar zone
- Zone 3 (good)
- Best month
- January (4.8)
- Worst month
- July (3.3)
- Climate
- Equatorial · 25.9°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 4.85 | 5.54 | 2.45 | 2.65 | 25.5 | 79 |
| Feb | 4.64 | 5.67 | 1.77 | 2.69 | 26.7 | 84 |
| Mar | 4.45 | 6.16 | 1.52 | 2.58 | 26.9 | 88 |
| Apr | 4.60 | 6.58 | 1.85 | 2.54 | 26.8 | 89 |
| May | 4.28 | 6.50 | 1.79 | 2.37 | 26.5 | 90 |
| Jun | 3.52 | 6.19 | 1.08 | 2.10 | 25.6 | 91 |
| Jul | 3.29 | 6.24 | 0.87 | 2.02 | 24.9 | 91 |
| Aug | 3.66 | 6.48 | 1.08 | 2.18 | 24.7 | 90 |
| Sep | 3.68 | 6.80 | 1.06 | 2.20 | 25.1 | 92 |
| Oct | 4.16 | 6.74 | 1.69 | 2.30 | 25.6 | 91 |
| Nov | 4.41 | 6.16 | 2.29 | 2.29 | 26.2 | 89 |
| Dec | 4.81 | 5.59 | 2.84 | 2.44 | 26.0 | 82 |
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 3.29 kWh/m²/day, 0.77 system efficiency.
About solar in Yenagoa
Yenagoa, 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 4.2 kWh/m²/day, a good solar resource by global standards.
The strongest month in Yenagoa is January (winter) at 4.85 kWh/m²/day, and the weakest is July (summer) at 3.29 kWh/m²/day. When sizing a year-round off-grid system, it's standard practice to design against the July value rather than the annual average — otherwise the battery bank runs low during the darkest weeks.
Yenagoa'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 Yenagoa?
- Yenagoa averages 4.2 peak sun hours per day annually, ranging from 3.29 in July to 4.85 in January.
- How many solar panels do I need in Yenagoa?
- Panel count depends on your daily load. At Yenagoa's annual average of 4.2 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 Yenagoa?
- Sizing against Yenagoa's worst month (July, 3.29 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 Yenagoa's solar resource compare globally?
- Yenagoa sits in solar zone 3 out of 5 (where 5 is strongest) at 4.2 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 Yenagoa?
- Near the equator, day length is nearly constant year-round and the sun stays close to overhead. In Yenagoa, monthly PSH ranges just from 3.29 to 4.85 kWh/m²/day — variance is driven by wet-season cloud cover, not day length.
- What tilt angle works best for panels in Yenagoa?
- At latitude 5°, panels in Yenagoa work best at a low tilt (roughly 5°) or horizontal. Tracking mounts add little benefit this close to the equator.
- How does the wet season affect solar output in Yenagoa?
- Equatorial wet seasons reduce output through cloud cover, not day length. Yenagoa's worst month (July) still delivers 3.29 kWh/m²/day — design against this value for reliable year-round off-grid use.