Solar Data for Johannesburg, South Africa
Solar Overview
Johannesburg, located at a latitude of -26.2041°, enjoys a warm temperate climate with an impressive average of 3036 sun hours each year. This solar potential creates a favorable environment for solar energy generation.
Geographic Impact
Being situated in a warm temperate climate, Johannesburg experiences mild winters and warm summers. This climate contributes to the overall effectiveness of solar panels throughout the year, particularly during peak sun months.
Rating Methodology
Johannesburg has received a 'Good' solar potential rating. This is due to the high number of annual sun hours and favorable temperature conditions that enhance the efficiency of solar energy systems.
Understanding the Data
The provided solar chart illustrates the average monthly sun hours in Johannesburg, showing a clear peak during the winter months of July, August, and September, making this period particularly advantageous for solar generation.
Cost & Savings Outlook
Investing in solar energy can help offset electricity costs over time, making it a viable option for residents looking to manage their energy expenses.
How It Compares
Johannesburg shares a 'Good' solar potential rating with comparison cities Durban and Cape Town, indicating a similarly favorable environment for generating solar power.
Installation Considerations
Given Johannesburg's latitude, solar panels should ideally be installed at a tilt angle that maximizes exposure to the sun, particularly focusing on winter sun angles. Seasonal variation in sunlight may affect optimal panel orientation, and temperature changes may influence the efficiency of solar energy systems throughout the year.
Local Incentives
Check local and national incentive programs, which vary by country and region.
Compare Solar Potential in South Africa
In Johannesburg, solar energy production is optimized during the winter months when sunlight is more abundant, despite cooler temperatures compared to the summer months.
The average temperature of 16.47°C throughout the year can help maintain the efficiency of solar panels, as extreme heat can reduce their performance.
Frequently Asked Questions
How many sun hours does Johannesburg receive annually?
Johannesburg receives an average of 3036 sun hours each year.
What is the average temperature in Johannesburg?
The average temperature in Johannesburg is approximately 16.47°C.
Which months have the most sunlight in Johannesburg?
The peak sun months in Johannesburg are July, August, and September.
What is the solar potential rating for Johannesburg?
Johannesburg has a solar potential rating of 'Good'.
How does Johannesburg's climate affect solar energy production?
The warm temperate climate of Johannesburg allows for efficient solar energy production, especially during the winter months when sunlight is plentiful.
What tilt angle is recommended for solar panels in Johannesburg?
Solar panels should be installed at a tilt angle that maximizes exposure to sunlight, considering the optimal angles for winter sun.
Solar Resource & Estimated Production
Irradiance data for Johannesburg hasn't been processed yet — check back soon.
Recommended Panel Orientation
Tilt angle: 26° from horizontal
Azimuth: 0° (true North)
Standard year-round heuristic based on latitude — a professional installer can optimize further for your roof.
Monthly Daylight Hours
Jan
13.5h
Feb
12.9h
Mar
12.2h
Apr
11.4h
May
10.7h
Jun
10.4h
Jul
10.5h
Aug
11.1h
Sep
11.9h
Oct
12.6h
Nov
13.3h
Dec
13.6h
Location Map
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