Peak Sun Hours in Reynosa, Tamaulipas, Mexico
- Solar zone
- Zone 4 (excellent)
- Best month
- June (6.9)
- Worst month
- December (3.0)
- Climate
- Tropical · 24.2°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 3.23 | 4.51 | 4.00 | 1.25 | 15.9 | 71 |
| Feb | 3.95 | 5.41 | 4.29 | 1.49 | 18.4 | 69 |
| Mar | 4.78 | 6.46 | 4.35 | 1.90 | 21.8 | 67 |
| Apr | 5.60 | 7.18 | 4.63 | 2.19 | 25.4 | 65 |
| May | 6.11 | 7.47 | 4.87 | 2.32 | 28.1 | 65 |
| Jun | 6.92 | 7.85 | 6.32 | 2.19 | 30.0 | 65 |
| Jul | 6.80 | 7.71 | 5.97 | 2.25 | 29.7 | 68 |
| Aug | 6.59 | 7.32 | 6.20 | 2.03 | 30.2 | 66 |
| Sep | 5.36 | 6.48 | 4.83 | 2.01 | 28.0 | 72 |
| Oct | 4.73 | 5.60 | 5.43 | 1.50 | 25.2 | 70 |
| Nov | 3.66 | 4.65 | 4.65 | 1.26 | 20.6 | 71 |
| Dec | 3.01 | 4.19 | 3.87 | 1.19 | 16.9 | 71 |
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 3.01 kWh/m²/day, 0.77 system efficiency.
About solar in Reynosa
Reynosa, Mexico has a warm, tropical climate with a distinct wet and dry season. Its annual peak sun hours average 5.06 kWh/m²/day, a excellent solar resource by global standards.
The strongest month in Reynosa is June (summer) at 6.92 kWh/m²/day, and the weakest is December (winter) at 3.01 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.
Reynosa'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 Reynosa?
- Reynosa averages 5.06 peak sun hours per day annually, ranging from 3.01 in December to 6.92 in June.
- How many solar panels do I need in Reynosa?
- Panel count depends on your daily load. At Reynosa's annual average of 5.06 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 Reynosa?
- Sizing against Reynosa's worst month (December, 3.01 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 Reynosa's solar resource compare globally?
- Reynosa sits in solar zone 4 out of 5 (where 5 is strongest) at 5.06 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 does the wet season affect solar generation in Reynosa?
- Reynosa's dry-season output peaks at 6.92 kWh/m²/day in June; the wet season drops it to 3.01 in December. That ~77% swing is a key sizing consideration.
- Can solar panels survive tropical storms in Reynosa?
- Most tier-1 PV panels are rated for 140+ mph wind loads; mounting hardware usually fails first. In cyclone-prone regions like Mexico, specify IEC 61215-certified panels and anchor-bolt mounts rather than ballasted.
- What's the dry-to-wet output gap in Reynosa?
- Reynosa swings from 6.92 kWh/m²/day in June (dry) to 3.01 in December (wet) — roughly 77%. Year-round off-grid systems must size against the wet-season minimum.