Climate averages 1991–2020
Nanaimo weather
in August.
A warm, moderately wet month: the warmest and the 2nd driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Nanaimo: daytime highs average 22.3°C and nights cool to about 15.3°C. By daytime temperature it is the warmest month of the year.
Expect about 54 mm of rain on roughly 6 days, which makes August a moderately wet month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 24 min on an average August day.
The nearest other city in this atlas is Vancouver (60 km away). In August its highs average 21.8°C, about as warm as Nanaimo, with 73 mm of rain.
Among the 86 cities listed in Canada, Nanaimo ranks joint 70th of 86 for the warmest August highs and 11th of 86 for the driest August (rainfall, lowest first). The mean August high of those 86 cities is 23.8°C; Nanaimo is 1.5°C cooler than that mean.
From August to September, average highs fall by 3.4°C to 18.8°C, and monthly rainfall rises from 54 mm to 86 mm.
The annual picture
August in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Nanaimo climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 5.9°C2.0°C | 2.0°C | 253 | 18.5 | 8.79 h |
| February | 6.9°C2.2°C | 2.2°C | 150 | 14.8 | 10.110 h |
| March | 8.9°C3.5°C | 3.5°C | 178 | 17.6 | 11.912 h |
| April | 11.9°C5.8°C | 5.8°C | 123 | 15.2 | 13.714 h |
| May | 16.1°C9.5°C | 9.5°C | 85 | 12.1 | 15.315 h |
| June | 18.8°C12.4°C | 12.4°C | 69 | 10.6 | 16.116 h |
| July | 22.1°C15.1°C | 15.1°C | 43 | 7.3 | 15.816 h |
| August, selected | 22.3°C15.3°C | 15.3°C | 54 | 6.3 | 14.414 h |
| September | 18.8°C12.5°C | 12.5°C | 86 | 9.3 | 12.713 h |
| October | 13.1°C8.2°C | 8.2°C | 177 | 15.2 | 10.811 h |
| November | 8.4°C4.4°C | 4.4°C | 264 | 18.7 | 9.29 h |
| December | 5.6°C2.0°C | 2.0°C | 247 | 18.6 | 8.38 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
August in nearby cities
- Vancouver in AugustCanada · 60 kmHigh 21.8°C · Low 14.4°C · 73 mm rain
- Delta in AugustCanada · 65 kmHigh 23.0°C · Low 14.4°C · 41 mm rain
- North Vancouver in AugustCanada · 65 kmHigh 22.1°C · Low 14.6°C · 73 mm rain
- Burnaby in AugustCanada · 73 kmHigh 22.4°C · Low 14.3°C · 73 mm rain
- New Westminster in AugustCanada · 75 kmHigh 22.6°C · Low 13.4°C · 73 mm rain
- Surrey in AugustCanada · 81 kmHigh 23.0°C · Low 13.3°C · 49 mm rain
- Coquitlam in AugustCanada · 85 kmHigh 23.3°C · Low 14.4°C · 84 mm rain
- Victoria in AugustCanada · 92 kmHigh 20.0°C · Low 14.0°C · 22 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Nanaimo) is explained once on the Nanaimo year overview and on the Sources, method and limits page.