expatwhy.

Wilderness weather by month

Wilderness runs from about 12°C in July to 21°C in January, with April the wettest month at 107 mm.

warmest month

January

21°C

coolest month

July

12°C

wettest month

April

107 mm

worst air month

August

8 µg/m³

The whole year, month by month.

Monthly climate normals for Wilderness
MonthAvg tempRainSunPM2.5
January21°C52 mm358 h7
February21°C20 mm352 h7
March20°C40 mm330 h7
April17°C107 mm283 h5
May16°C27 mm279 h6
June15°C69 mm232 h7
July12°C27 mm249 h7
August13°C19 mm301 h8
September14°C59 mm304 h7
October17°C100 mm349 h7
November17°C57 mm361 h7
December20°C25 mm404 h7

About 3,802 hours of sun a year. Roughly 62 rainy days a year.

These are long-run climate normals, not a forecast. A given year can sit well outside them. PM2.5 is a global model: near the coast it counts sea salt as fine particulate and reads high against ground stations, sometimes by a factor of two. Use the shape of the year, not the absolute number.

where these numbers come from

  • · Temperature, rainfall and sunshine: ECMWF ERA5 reanalysis climate normals via Open-Meteo (CC BY 4.0), fetched once and stored.
  • · PM2.5: Copernicus CAMS reanalysis, monthly means. Modelled, not station readings; near coasts CAMS counts sea salt as PM2.5 and reads high.

Last reviewed 2026-05-27. Full method, licences and the list of sources we rejected are on the methodology page.