Peak Sun Hours in Afyonkarahisar, Afyonkarahisar Province, Turkey
- Solar zone
- Zone 3 (good)
- Best month
- July (7.8)
- Worst month
- December (1.9)
- Climate
- Temperate · 10.2°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 2.11 | 3.20 | 2.81 | 1.07 | -1.2 | 85 |
| Feb | 2.95 | 4.32 | 3.18 | 1.47 | 0.7 | 79 |
| Mar | 4.16 | 5.75 | 3.93 | 1.89 | 4.5 | 71 |
| Apr | 5.41 | 7.14 | 4.48 | 2.41 | 8.7 | 66 |
| May | 6.43 | 8.08 | 5.25 | 2.67 | 13.8 | 63 |
| Jun | 7.39 | 8.50 | 6.97 | 2.42 | 18.1 | 58 |
| Jul | 7.77 | 8.28 | 8.26 | 2.00 | 21.3 | 52 |
| Aug | 6.92 | 7.37 | 7.60 | 1.82 | 21.4 | 52 |
| Sep | 5.52 | 6.13 | 6.47 | 1.62 | 17.3 | 54 |
| Oct | 3.86 | 4.63 | 4.94 | 1.37 | 11.6 | 63 |
| Nov | 2.67 | 3.41 | 4.16 | 1.00 | 5.5 | 72 |
| Dec | 1.92 | 2.82 | 3.03 | 0.88 | 0.8 | 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 1.92 kWh/m²/day, 0.77 system efficiency.
About solar in Afyonkarahisar
Afyonkarahisar, Turkey has a temperate climate with meaningful seasonal variation in solar resource. Its annual peak sun hours average 4.76 kWh/m²/day, a good solar resource by global standards.
The strongest month in Afyonkarahisar is July (summer) at 7.77 kWh/m²/day, and the weakest is December (winter) at 1.92 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.
Afyonkarahisar'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 Afyonkarahisar?
- Afyonkarahisar averages 4.76 peak sun hours per day annually, ranging from 1.92 in December to 7.77 in July.
- How many solar panels do I need in Afyonkarahisar?
- Panel count depends on your daily load. At Afyonkarahisar's annual average of 4.76 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 Afyonkarahisar?
- Sizing against Afyonkarahisar's worst month (December, 1.92 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 Afyonkarahisar's solar resource compare globally?
- Afyonkarahisar sits in solar zone 3 out of 5 (where 5 is strongest) at 4.76 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 Afyonkarahisar?
- Afyonkarahisar's worst month (December) delivers 1.92 kWh/m²/day — about 25% of the summer peak of 7.77. Off-grid systems here typically oversize 1.5–2× or pair with a backup source.
- Do cloudy days significantly affect Afyonkarahisar's solar?
- Partly. Diffuse light still produces 10–25% of clear-sky output. Afyonkarahisar's 4.76 kWh/m²/day already reflects average cloudiness, so no further derating is needed for sizing.
- What panel tilt works best in Afyonkarahisar?
- At Afyonkarahisar's latitude (39°), a fixed tilt near 39° balances year-round yield. Winter-heavy loads favor latitude + 15°; summer-heavy, latitude − 15°.