Equatorial Guinea weather by month

In Bata, the average share of the sky covered by clouds shows moderate seasonal variation over the course of the year.

The clearer part of the year begins around November 25 and lasts for 3.7 months, ending around March 18. The clearest month is January, when the sky is clear, mostly clear, or partly cloudy 19% of the time on average.

The cloudier part of the year begins around June 25 and lasts for 5.0 months, ending around November 24. The cloudiest month is October, when it is overcast or mostly cloudy 98% 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 Bata is typically calm, near 8 km/h, and varies moderately with the seasons.

The windier part of the year lasts 4.2 months, from around May 29 to Oct 3. The windiest month is August, averaging about 11 km/h (calm).

The calmer part of the year runs from around Oct 4 to May 28, with April the calmest month at about 6 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.

Bata receives about 4.1 kWh/m² a day of solar energy — bright — and it stays remarkably steady, holding between 3.6 and 4.8 kWh/m² all year. For solar panels, output here is a flat line, not a seasonal wave.