Peak Sun Hours in Diyarbakır, Diyarbakır Province, Turkey
- Solar zone
- Zone 3 (good)
- Best month
- June (8.1)
- Worst month
- December (2.0)
- Climate
- Temperate · 15.4°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 2.19 | 3.15 | 3.16 | 0.96 | 0.7 | 79 |
| Feb | 3.00 | 4.20 | 3.48 | 1.33 | 3.0 | 77 |
| Mar | 4.35 | 5.63 | 4.22 | 1.85 | 7.8 | 71 |
| Apr | 5.56 | 6.92 | 4.48 | 2.46 | 12.8 | 66 |
| May | 6.82 | 7.85 | 5.66 | 2.63 | 18.6 | 57 |
| Jun | 8.05 | 8.43 | 8.21 | 2.12 | 25.6 | 37 |
| Jul | 7.90 | 8.12 | 8.03 | 2.08 | 30.7 | 24 |
| Aug | 7.09 | 7.29 | 7.40 | 1.94 | 30.6 | 23 |
| Sep | 5.82 | 6.06 | 6.58 | 1.67 | 25.1 | 27 |
| Oct | 4.03 | 4.53 | 4.70 | 1.50 | 17.9 | 44 |
| Nov | 2.82 | 3.40 | 4.23 | 1.04 | 8.9 | 62 |
| Dec | 2.04 | 2.81 | 3.26 | 0.86 | 2.9 | 75 |
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 2.04 kWh/m²/day, 0.77 system efficiency.
About solar in Diyarbakır
Diyarbakır, Turkey has a temperate climate with meaningful seasonal variation in solar resource. Its annual peak sun hours average 4.97 kWh/m²/day, a good solar resource by global standards.
The strongest month in Diyarbakır is June (summer) at 8.05 kWh/m²/day, and the weakest is December (winter) at 2.04 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.
Diyarbakır'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 Diyarbakır?
- Diyarbakır averages 4.97 peak sun hours per day annually, ranging from 2.04 in December to 8.05 in June.
- How many solar panels do I need in Diyarbakır?
- Panel count depends on your daily load. At Diyarbakır's annual average of 4.97 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 Diyarbakır?
- Sizing against Diyarbakır's worst month (December, 2.04 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 Diyarbakır's solar resource compare globally?
- Diyarbakır sits in solar zone 3 out of 5 (where 5 is strongest) at 4.97 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 Diyarbakır?
- Diyarbakır's worst month (December) delivers 2.04 kWh/m²/day — about 25% of the summer peak of 8.05. Off-grid systems here typically oversize 1.5–2× or pair with a backup source.
- Do cloudy days significantly affect Diyarbakır's solar?
- Partly. Diffuse light still produces 10–25% of clear-sky output. Diyarbakır's 4.97 kWh/m²/day already reflects average cloudiness, so no further derating is needed for sizing.
- What panel tilt works best in Diyarbakır?
- At Diyarbakır's latitude (38°), a fixed tilt near 38° balances year-round yield. Winter-heavy loads favor latitude + 15°; summer-heavy, latitude − 15°.