Peak Sun Hours in Santiago de Querétaro, Querétaro, Mexico
- Solar zone
- Zone 4 (excellent)
- Best month
- April (7.2)
- Worst month
- December (4.7)
- Climate
- Temperate · 17.4°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 4.84 | 5.50 | 6.22 | 1.42 | 13.2 | 58 |
| Feb | 5.76 | 6.40 | 7.10 | 1.46 | 15.3 | 52 |
| Mar | 6.73 | 7.39 | 7.64 | 1.65 | 17.6 | 45 |
| Apr | 7.21 | 7.95 | 7.37 | 1.94 | 20.6 | 39 |
| May | 6.98 | 7.96 | 6.19 | 2.26 | 21.7 | 46 |
| Jun | 6.34 | 7.94 | 4.71 | 2.56 | 20.3 | 62 |
| Jul | 6.13 | 7.85 | 4.14 | 2.70 | 18.7 | 72 |
| Aug | 6.13 | 7.63 | 4.41 | 2.59 | 18.5 | 74 |
| Sep | 5.45 | 7.07 | 3.92 | 2.46 | 17.7 | 76 |
| Oct | 5.38 | 6.38 | 5.30 | 1.91 | 16.6 | 72 |
| Nov | 5.00 | 5.63 | 6.33 | 1.41 | 14.6 | 68 |
| Dec | 4.71 | 5.22 | 6.41 | 1.35 | 13.6 | 62 |
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 4.71 kWh/m²/day, 0.77 system efficiency.
About solar in Santiago de Querétaro
Santiago de Querétaro, Mexico has a temperate climate with meaningful seasonal variation in solar resource. Its annual peak sun hours average 5.89 kWh/m²/day, a excellent solar resource by global standards.
The strongest month in Santiago de Querétaro is April (spring) at 7.21 kWh/m²/day, and the weakest is December (winter) at 4.71 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.
Santiago de Querétaro'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 Santiago de Querétaro?
- Santiago de Querétaro averages 5.89 peak sun hours per day annually, ranging from 4.71 in December to 7.21 in April.
- How many solar panels do I need in Santiago de Querétaro?
- Panel count depends on your daily load. At Santiago de Querétaro's annual average of 5.89 kWh/m²/day, a 5 kWh/day load needs roughly 3 × 400 W panels. Use the calculator above for your actual load.
- What size battery do I need in Santiago de Querétaro?
- Sizing against Santiago de Querétaro's worst month (December, 4.71 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 Santiago de Querétaro's solar resource compare globally?
- Santiago de Querétaro sits in solar zone 4 out of 5 (where 5 is strongest) at 5.89 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 Santiago de Querétaro?
- Santiago de Querétaro's worst month (December) delivers 4.71 kWh/m²/day — about 65% of the summer peak of 7.21. Off-grid systems here typically oversize 1.5–2× or pair with a backup source.
- Do cloudy days significantly affect Santiago de Querétaro's solar?
- Partly. Diffuse light still produces 10–25% of clear-sky output. Santiago de Querétaro's 5.89 kWh/m²/day already reflects average cloudiness, so no further derating is needed for sizing.
- What panel tilt works best in Santiago de Querétaro?
- At Santiago de Querétaro's latitude (21°), a fixed tilt near 21° balances year-round yield. Winter-heavy loads favor latitude + 15°; summer-heavy, latitude − 15°.