Mauritius weather by month

In Port Louis, the average share of the sky covered by clouds shows significant seasonal variation over the course of the year.

The clearer part of the year begins around April 18 and lasts for 6.7 months, ending around November 6. The clearest month is June, when the sky is clear, mostly clear, or partly cloudy 84% of the time on average.

The cloudier part of the year begins around November 7 and lasts for 5.3 months, ending around April 17. The cloudiest month is January, when it is overcast or mostly cloudy 54% of the time.

This is the average sustained wind speed at the standard 10 metres above open ground — the steady flow a weather station reports, not the sharper gusts that come and go, which can run half again as fast. It's the number that says whether a place is generally breezy or calm.

Across the year, average wind speed in Port Louis is typically light breeze, near 19 km/h, and varies moderately with the seasons.

The windier part of the year lasts 4.8 months, from around May 29 to Oct 21. The windiest month is July, averaging about 22 km/h (breezy).

The calmer part of the year runs from around Oct 22 to May 28, with November the calmest month at about 17 km/h.

Solar energy is how much sunlight actually reaches the ground each day, measured in kilowatt-hours per square metre (kWh/m²) — the combined effect of how long the sun is up, how high it climbs, and how much cloud gets in the way. It's the raw fuel a solar panel has to work with: for scale, 1 kWh/m² a day is dim and wintry, while 7+ is desert-bright.

Port Louis receives about 5.6 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 3.8 and 7.3 kWh/m².

The brighter stretch of the year lasts 6.5 months, from around Sep 15 to Mar 30. The brightest month is December, averaging about 7.2 kWh/m² (intense).

The dimmest month is June, down near 3.9 kWh/m² — roughly 46% less than the December peak.