Peak Sun Hours in Mersin, Mersin, Turkey
- Solar zone
- Zone 4 (excellent)
- Best month
- June (7.8)
- Worst month
- December (2.2)
- Climate
- Temperate · 12.1°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 2.28 | 3.28 | 3.28 | 0.98 | 0.7 | 80 |
| Feb | 3.20 | 4.36 | 3.81 | 1.36 | 2.0 | 79 |
| Mar | 4.58 | 5.73 | 4.68 | 1.80 | 5.6 | 73 |
| Apr | 5.85 | 6.99 | 5.23 | 2.25 | 9.7 | 68 |
| May | 6.88 | 7.81 | 6.06 | 2.44 | 14.6 | 63 |
| Jun | 7.76 | 8.22 | 7.71 | 2.16 | 19.8 | 52 |
| Jul | 7.71 | 7.98 | 8.06 | 1.92 | 23.8 | 41 |
| Aug | 6.90 | 7.14 | 7.36 | 1.79 | 24.0 | 40 |
| Sep | 5.72 | 6.03 | 6.67 | 1.53 | 19.9 | 46 |
| Oct | 4.14 | 4.66 | 5.22 | 1.36 | 14.2 | 55 |
| Nov | 2.92 | 3.50 | 4.39 | 1.04 | 7.8 | 65 |
| Dec | 2.17 | 2.95 | 3.50 | 0.85 | 3.0 | 74 |
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 2.17 kWh/m²/day, 0.77 system efficiency.
About solar in Mersin
Mersin, Turkey has a temperate climate with meaningful seasonal variation in solar resource. Its annual peak sun hours average 5.01 kWh/m²/day, a excellent solar resource by global standards.
The strongest month in Mersin is June (summer) at 7.76 kWh/m²/day, and the weakest is December (winter) at 2.17 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.
Mersin'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 Mersin?
- Mersin averages 5.01 peak sun hours per day annually, ranging from 2.17 in December to 7.76 in June.
- How many solar panels do I need in Mersin?
- Panel count depends on your daily load. At Mersin's annual average of 5.01 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 Mersin?
- Sizing against Mersin's worst month (December, 2.17 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 Mersin's solar resource compare globally?
- Mersin sits in solar zone 4 out of 5 (where 5 is strongest) at 5.01 kWh/m²/day — excellent 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 Mersin?
- Mersin's worst month (December) delivers 2.17 kWh/m²/day — about 28% of the summer peak of 7.76. Off-grid systems here typically oversize 1.5–2× or pair with a backup source.
- Do cloudy days significantly affect Mersin's solar?
- Partly. Diffuse light still produces 10–25% of clear-sky output. Mersin's 5.01 kWh/m²/day already reflects average cloudiness, so no further derating is needed for sizing.
- What panel tilt works best in Mersin?
- At Mersin's latitude (37°), a fixed tilt near 37° balances year-round yield. Winter-heavy loads favor latitude + 15°; summer-heavy, latitude − 15°.