Peak Sun Hours in Uşak, Uşak, Turkey
- Solar zone
- Zone 3 (good)
- Best month
- July (7.8)
- Worst month
- December (2.0)
- Climate
- Temperate · 13.0°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 2.18 | 3.14 | 3.16 | 1.01 | 1.5 | 82 |
| Feb | 2.94 | 4.23 | 3.35 | 1.38 | 3.3 | 77 |
| Mar | 4.16 | 5.67 | 4.03 | 1.83 | 6.8 | 71 |
| Apr | 5.44 | 7.07 | 4.57 | 2.38 | 11.0 | 66 |
| May | 6.50 | 8.00 | 5.46 | 2.61 | 16.2 | 61 |
| Jun | 7.46 | 8.43 | 7.25 | 2.31 | 20.9 | 54 |
| Jul | 7.83 | 8.21 | 8.61 | 1.84 | 24.6 | 45 |
| Aug | 6.94 | 7.31 | 7.76 | 1.74 | 24.9 | 44 |
| Sep | 5.54 | 6.07 | 6.59 | 1.57 | 20.3 | 48 |
| Oct | 3.90 | 4.59 | 5.13 | 1.32 | 14.3 | 58 |
| Nov | 2.70 | 3.36 | 4.30 | 0.97 | 8.2 | 68 |
| Dec | 1.99 | 2.77 | 3.27 | 0.85 | 3.5 | 78 |
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 1.99 kWh/m²/day, 0.77 system efficiency.
About solar in Uşak
Uşak, Turkey has a temperate climate with meaningful seasonal variation in solar resource. Its annual peak sun hours average 4.8 kWh/m²/day, a good solar resource by global standards.
The strongest month in Uşak is July (summer) at 7.83 kWh/m²/day, and the weakest is December (winter) at 1.99 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.
Uşak'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 Uşak?
- Uşak averages 4.8 peak sun hours per day annually, ranging from 1.99 in December to 7.83 in July.
- How many solar panels do I need in Uşak?
- Panel count depends on your daily load. At Uşak's annual average of 4.8 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 Uşak?
- Sizing against Uşak's worst month (December, 1.99 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 Uşak's solar resource compare globally?
- Uşak sits in solar zone 3 out of 5 (where 5 is strongest) at 4.8 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 much does winter reduce solar output in Uşak?
- Uşak's worst month (December) delivers 1.99 kWh/m²/day — about 25% of the summer peak of 7.83. Off-grid systems here typically oversize 1.5–2× or pair with a backup source.
- Do cloudy days significantly affect Uşak's solar?
- Partly. Diffuse light still produces 10–25% of clear-sky output. Uşak's 4.8 kWh/m²/day already reflects average cloudiness, so no further derating is needed for sizing.
- What panel tilt works best in Uşak?
- At Uşak's latitude (39°), a fixed tilt near 39° balances year-round yield. Winter-heavy loads favor latitude + 15°; summer-heavy, latitude − 15°.