Fiji weather by month

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

The clearer part of the year begins around April 23 and lasts for 3.9 months, ending around August 18. The clearest month is July, when the sky is clear, mostly clear, or partly cloudy 39% of the time on average.

The cloudier part of the year begins around December 24 and lasts for 3.9 months, ending around April 22. The cloudiest month is January, when it is overcast or mostly cloudy 71% 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 Nasinu is typically light breeze, near 15 km/h, and varies little with the seasons.

The windier part of the year lasts 6.3 months, from around Apr 30 to Nov 8. The windiest month is July, averaging about 17 km/h (light breeze).

The calmer part of the year runs from around Nov 9 to Apr 29, with March the calmest month at about 13 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.

Nasinu receives about 4.9 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 3.4 and 6.4 kWh/m².

The brighter stretch of the year lasts 6.4 months, from around Sep 21 to Apr 2. The brightest month is December, averaging about 6.1 kWh/m² (intense).

The dimmest month is July, down near 3.6 kWh/m² — roughly 42% less than the December peak.