Monthly climate averages for Chemainus, Canada. Based on 10-year ERA5 reanalysis data.
Csb Warm-Summer Mediterranean
Climate OverviewChemainus, Canada in August has warm conditions, with highs averaging 26.2°C (79°F). Temperatures drop noticeably between day and night.
This month falls at the end of Summer.
Temperatures remain fairly steady throughout August, with daily highs around 26°C (79°F).
August sees fairly even rainfall, totalling about 25 mm across the month.
Expect around 13.2h of sunshine at the start of August, decreasing to 11.6h by the end.
The warmest days tend to fall around the 1th, averaging 27.2°C (81°F).
Temperatures begin dropping heading into September.
Daily averages based on historical data (2016–2025)
Daytime temperatures around 26°C (79°F) are ideal for full-day outdoor exploration.
Rain is uncommon in this month, so most days stay dry from morning through evening.
1 of the last 5 yearly records were warmer than this month's long-run average.
| Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 6°C / 1°C | 4°C / -2°C | 17days (207 mm) Wet | 3.8h Poor | 88% Very Muggy | 1.2 Low | Wet | View Details |
| February | 7°C / 1°C | 4°C / -3°C | 14days (115 mm) Wet | 5.4h Fair | 82% Humid | 1.8 Low | Poor | View Details |
| March | 10°C / 2°C | 7°C / -1°C | 17days (126 mm) Wet | 7.3h Good | 82% Humid | 3.1 Moderate | Poor | View Details |
| April | 14°C / 5°C | 12°C / 3°C | 16days (101 mm) Wet | 9.3h Good | 76% Humid | 4.7 Moderate | Fair | View Details |
| May | 19°C / 9°C | 18°C / 8°C | 11days (61 mm) Wet | 11.6h Excellent | 72% Muggy | 6 High | Good | View Details |
| June best | 21°C / 12°C | 21°C / 11°C | 10days (55 mm) Wet | 12.5h Excellent | 69% Muggy | 6.5 High | Excellent | View Details |
| July best | 26°C / 15°C | 26°C / 15°C | 5days (22 mm) Good | 13.5h Excellent | 66% Muggy | 6.9 High | Excellent | View Details |
| August best | 26°C / 16°C | 27°C / 16°C | 5days (25 mm) Good | 12.2h Excellent | 67% Muggy | 5.9 High | Excellent | View Details |
| September best | 21°C / 13°C | 21°C / 12°C | 10days (84 mm) Wet | 9.4h Good | 76% Humid | 4.4 Moderate | Excellent | View Details |
| October | 14°C / 8°C | 13°C / 6°C | 14days (144 mm) Wet | 6.4h Fair | 84% Humid | 2.6 Moderate | Fair | View Details |
| November | 9°C / 4°C | 7°C / 2°C | 18days (211 mm) Wet | 4.1h Fair | 89% Very Muggy | 1.4 Low | Wet | View Details |
| December | 6°C / 1°C | 3°C / -2°C | 19days (201 mm) Wet | 3.2h Poor | 89% Very Muggy | 0.9 Low | Wet | View Details |
Summer clothing like shorts, t-shirts, and sundresses will be comfortable. Bring a light cardigan for air-conditioned spaces.
Temperatures drop significantly at night, so pack layers you can add or remove throughout the day.
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