Climate averages 1991–2020
New Westminster weather
in May.
A mild, wet month: the 5th warmest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a mild month in New Westminster: daytime highs average 16.6°C and nights cool to about 7.1°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 117 mm of rain on roughly 13 days, which makes May a wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 15 h 17 min on an average May day.
The nearest other city in this atlas is Burnaby (7 km away). In May its highs average 16.4°C, about as warm as New Westminster, with 117 mm of rain.
Among the 86 cities listed in Canada, New Westminster ranks 59th of 86 for the warmest May highs and joint 78th of 86 for the driest May (rainfall, lowest first). The mean May high of those 86 cities is 17.0°C; New Westminster is 0.4°C cooler than that mean.
From May to June, average highs rise by 2.3°C to 18.9°C, and monthly rainfall falls from 117 mm to 94 mm.
The annual picture
May 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
New Westminster climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 5.0°C-0.5°C | -0.5°C | 316 | 19.0 | 8.79 h |
| February | 6.8°C-0.4°C | -0.4°C | 191 | 15.6 | 10.110 h |
| March | 9.2°C1.2°C | 1.2°C | 252 | 19.2 | 11.912 h |
| April | 12.6°C3.5°C | 3.5°C | 175 | 16.9 | 13.714 h |
| May, selected | 16.6°C7.1°C | 7.1°C | 117 | 12.5 | 15.315 h |
| June | 18.9°C10.3°C | 10.3°C | 94 | 11.5 | 16.216 h |
| July | 22.4°C13.1°C | 13.1°C | 53 | 6.6 | 15.816 h |
| August | 22.6°C13.4°C | 13.4°C | 73 | 7.4 | 14.414 h |
| September | 19.3°C10.7°C | 10.7°C | 125 | 10.2 | 12.713 h |
| October | 13.2°C6.5°C | 6.5°C | 246 | 16.3 | 10.811 h |
| November | 7.9°C2.4°C | 2.4°C | 349 | 19.9 | 9.29 h |
| December | 4.6°C-0.4°C | -0.4°C | 307 | 19.4 | 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
May in nearby cities
- Burnaby in MayCanada · 7 kmHigh 16.4°C · Low 8.0°C · 117 mm rain
- Coquitlam in MayCanada · 13 kmHigh 17.4°C · Low 7.7°C · 134 mm rain
- Surrey in MayCanada · 13 kmHigh 16.7°C · Low 7.3°C · 85 mm rain
- Vancouver in MayCanada · 16 kmHigh 15.8°C · Low 8.4°C · 117 mm rain
- Delta in MayCanada · 17 kmHigh 16.8°C · Low 8.8°C · 69 mm rain
- North Vancouver in MayCanada · 17 kmHigh 16.1°C · Low 8.4°C · 117 mm rain
- Langley in MayCanada · 22 kmHigh 17.2°C · Low 7.5°C · 85 mm rain
- Maple Ridge in MayCanada · 22 kmHigh 17.1°C · Low 7.2°C · 154 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 New Westminster) is explained once on the New Westminster year overview and on the Sources, method and limits page.
Vancouver, Burnaby and North Vancouver lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.