Saint Pierre and Miquelon weather by month

In Saint-Pierre, 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 March 26 and lasts for 7.2 months, ending around October 30. The clearest month is September, when the sky is clear, mostly clear, or partly cloudy 44% of the time on average.

The cloudier part of the year begins around October 31 and lasts for 4.8 months, ending around March 25. The cloudiest month is January, when it is overcast or mostly cloudy 92% 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 Saint-Pierre is typically windy, near 30 km/h, and varies a lot with the seasons.

The windier part of the year lasts 6.1 months, from around Oct 8 to Apr 10. The windiest month is January, averaging about 37 km/h (windy).

The calmer part of the year runs from around Apr 11 to Oct 7, with July the calmest month at about 23 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.

Saint-Pierre receives about 3.4 kWh/m² a day of solar energy on average — moderate — with a clear seasonal swing between 0.9 and 5.7 kWh/m².

The brighter stretch of the year lasts 6.3 months, from around Mar 18 to Sep 24. The brightest month is June, averaging about 5.6 kWh/m² (bright).

The dimmest month is December, down near 0.9 kWh/m² — roughly 83% less than the June peak.