Peak Sun Hours in Rosemont–La Petite-Patrie, Quebec, Canada
- Solar zone
- Zone 2 (moderate)
- Best month
- July (5.8)
- Worst month
- December (1.0)
- Climate
- Continental · 6.4°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 1.45 | 2.33 | 2.35 | 0.78 | -11.3 | 92 |
| Feb | 2.38 | 3.56 | 3.04 | 1.23 | -9.6 | 90 |
| Mar | 3.56 | 5.19 | 4.05 | 1.58 | -3.3 | 87 |
| Apr | 4.43 | 6.71 | 4.20 | 1.96 | 5.4 | 81 |
| May | 5.26 | 7.73 | 4.43 | 2.32 | 13.2 | 79 |
| Jun | 5.76 | 8.07 | 4.78 | 2.42 | 18.5 | 79 |
| Jul | 5.77 | 7.64 | 4.73 | 2.48 | 21.7 | 76 |
| Aug | 5.06 | 6.67 | 4.60 | 2.12 | 21.1 | 74 |
| Sep | 3.97 | 5.31 | 4.56 | 1.51 | 16.9 | 75 |
| Oct | 2.34 | 3.74 | 2.98 | 1.10 | 8.8 | 81 |
| Nov | 1.44 | 2.46 | 2.29 | 0.73 | 1.4 | 86 |
| Dec | 1.04 | 1.92 | 1.75 | 0.59 | -6.6 | 91 |
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 1.04 kWh/m²/day, 0.77 system efficiency.
About solar in Rosemont–La Petite-Patrie
Rosemont–La Petite-Patrie, Canada has a continental climate with cold winters and warmer summers. Its annual peak sun hours average 3.54 kWh/m²/day, a moderate solar resource by global standards.
The strongest month in Rosemont–La Petite-Patrie is July (summer) at 5.77 kWh/m²/day, and the weakest is December (winter) at 1.04 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.
Given the moderate resource, Rosemont–La Petite-Patrie installations typically oversize panels or combine solar with another source (grid, generator, hydro) for reliability.
FAQ
- What are the peak sun hours in Rosemont–La Petite-Patrie?
- Rosemont–La Petite-Patrie averages 3.54 peak sun hours per day annually, ranging from 1.04 in December to 5.77 in July.
- How many solar panels do I need in Rosemont–La Petite-Patrie?
- Panel count depends on your daily load. At Rosemont–La Petite-Patrie's annual average of 3.54 kWh/m²/day, a 5 kWh/day load needs roughly 5 × 400 W panels. Use the calculator above for your actual load.
- What size battery do I need in Rosemont–La Petite-Patrie?
- Sizing against Rosemont–La Petite-Patrie's worst month (December, 1.04 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 Rosemont–La Petite-Patrie's solar resource compare globally?
- Rosemont–La Petite-Patrie sits in solar zone 2 out of 5 (where 5 is strongest) at 3.54 kWh/m²/day — moderate by global standards. For reference, top-tier desert sites average ~6.5 and high-latitude cities around 2.5 kWh/m²/day.
- Does snow block solar panels in Rosemont–La Petite-Patrie?
- Yes — snow cover can drop output to near zero. In Rosemont–La Petite-Patrie's winter months (around December), brush panels after significant snowfall or design with steep tilt (45°+) so snow slides off naturally.
- How much does winter hurt solar output in Rosemont–La Petite-Patrie?
- Rosemont–La Petite-Patrie's worst month is December at 1.04 kWh/m²/day versus 5.77 in July — a 134% seasonal swing. Off-grid continental systems usually combine oversized arrays with wood-stove or generator backup.
- Is solar worth it in a continental climate like Rosemont–La Petite-Patrie's?
- Yes, but the seasonal ratio matters. Rosemont–La Petite-Patrie's annual 3.54 kWh/m²/day is solid; grid-tied net metering works well (summer credits offset winter draw). Full off-grid needs generator or hydro backup.