Peak Sun Hours in Vadodara, Gujarat, India
- Solar zone
- Zone 4 (excellent)
- Best month
- May (7.5)
- Worst month
- August (3.9)
- Climate
- Tropical · 27.4°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 4.66 | 4.80 | 5.64 | 1.47 | 20.5 | 34 |
| Feb | 5.58 | 5.72 | 6.20 | 1.68 | 23.9 | 28 |
| Mar | 6.58 | 6.75 | 6.64 | 1.89 | 28.5 | 25 |
| Apr | 7.29 | 7.43 | 6.86 | 2.07 | 32.8 | 28 |
| May | 7.51 | 7.67 | 6.74 | 2.18 | 35.0 | 37 |
| Jun | 5.95 | 7.17 | 3.50 | 2.86 | 32.7 | 59 |
| Jul | 4.17 | 6.77 | 1.32 | 2.65 | 28.9 | 80 |
| Aug | 3.93 | 6.59 | 1.28 | 2.53 | 27.4 | 86 |
| Sep | 4.84 | 6.19 | 2.89 | 2.43 | 27.5 | 83 |
| Oct | 5.47 | 5.68 | 5.33 | 1.82 | 26.6 | 66 |
| Nov | 4.70 | 4.83 | 5.28 | 1.54 | 24.1 | 52 |
| Dec | 4.33 | 4.45 | 5.51 | 1.33 | 21.3 | 42 |
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 3.93 kWh/m²/day, 0.77 system efficiency.
About solar in Vadodara
Vadodara, India has a warm, tropical climate with a distinct wet and dry season. Its annual peak sun hours average 5.42 kWh/m²/day, a excellent solar resource by global standards.
The strongest month in Vadodara is May (spring) at 7.51 kWh/m²/day, and the weakest is August (summer) at 3.93 kWh/m²/day. When sizing a year-round off-grid system, it's standard practice to design against the August value rather than the annual average — otherwise the battery bank runs low during the darkest weeks.
Vadodara'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 Vadodara?
- Vadodara averages 5.42 peak sun hours per day annually, ranging from 3.93 in August to 7.51 in May.
- How many solar panels do I need in Vadodara?
- Panel count depends on your daily load. At Vadodara's annual average of 5.42 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 Vadodara?
- Sizing against Vadodara's worst month (August, 3.93 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 Vadodara's solar resource compare globally?
- Vadodara sits in solar zone 4 out of 5 (where 5 is strongest) at 5.42 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 Vadodara?
- Vadodara's dry-season output peaks at 7.51 kWh/m²/day in May; the wet season drops it to 3.93 in August. That ~66% swing is a key sizing consideration.
- Can solar panels survive tropical storms in Vadodara?
- Most tier-1 PV panels are rated for 140+ mph wind loads; mounting hardware usually fails first. In cyclone-prone regions like India, specify IEC 61215-certified panels and anchor-bolt mounts rather than ballasted.
- What's the dry-to-wet output gap in Vadodara?
- Vadodara swings from 7.51 kWh/m²/day in May (dry) to 3.93 in August (wet) — roughly 66%. Year-round off-grid systems must size against the wet-season minimum.