Solar Potential & Climate Data for Colombo
Solar Overview
With 2,505 sun hours annually, Colombo offers good solar conditions, especially during March. This near-equatorial location (6.93°) provides extremely consistent solar irradiation year-round, with minimal seasonal variation. Overall, Colombo is considered well-suited for residential and commercial solar installations.
Geographic Impact
Positioned at 6.9271° latitude and 79.8612° longitude, Colombo's geographic coordinates shape its solar resource profile. At 6.93°, the near-equatorial location means the sun passes almost directly overhead year-round, creating ideal conditions for solar generation.
Rating Methodology
With 2,505 sun hours annually and 28.4°C average temperature, Colombo achieves a "Good" solar potential rating. While warm temperatures cause some efficiency loss, the abundant solar resource ensures strong overall system performance. Solar installations in Colombo typically achieve capacity factors of 15-18%, supporting strong financial returns.
Understanding the Data
The accompanying chart illustrates monthly solar irradiation patterns for Colombo. The chart reveals balanced solar availability throughout the year, with peak production during March. This distribution pattern helps inform decisions about fixed versus tracking systems and optimal capacity design.
💡 Tip: Solar panels in Colombo may benefit from elevated mounting to improve air circulation and reduce heat-related efficiency losses during peak summer months.
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