Climate averages 1991–2020
Delta weather
in April.
A cool, wet month: the 7th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a cool month in Delta: daytime highs average 12.8°C and nights cool to about 5.4°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 109 mm of rain on roughly 14 days, which makes April a wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 41 min on an average April day.
The nearest other city in this atlas is New Westminster (17 km away). In April its highs average 12.6°C, about as warm as Delta, with 175 mm of rain.
Among the 86 cities listed in Canada, Delta ranks joint 5th of 86 for the warmest April highs and 75th of 86 for the driest April (rainfall, lowest first). The mean April high of those 86 cities is 10.3°C; Delta is 2.5°C warmer than that mean.
From April to May, average highs rise by 3.9°C to 16.8°C, and monthly rainfall falls from 109 mm to 69 mm.
The annual picture
April 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
Delta climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 6.1°C1.4°C | 1.4°C | 209 | 18.0 | 8.79 h |
| February | 7.7°C1.6°C | 1.6°C | 125 | 14.3 | 10.110 h |
| March | 9.8°C3.1°C | 3.1°C | 156 | 17.3 | 11.912 h |
| April, selected | 12.8°C5.4°C | 5.4°C | 109 | 13.7 | 13.714 h |
| May | 16.8°C8.8°C | 8.8°C | 69 | 10.1 | 15.315 h |
| June | 19.2°C11.6°C | 11.6°C | 49 | 8.1 | 16.116 h |
| July | 22.8°C14.2°C | 14.2°C | 28 | 4.6 | 15.816 h |
| August | 23.0°C14.4°C | 14.4°C | 41 | 4.8 | 14.414 h |
| September | 19.6°C12.0°C | 12.0°C | 72 | 8.2 | 12.713 h |
| October | 13.6°C7.9°C | 7.9°C | 155 | 14.3 | 10.811 h |
| November | 8.6°C4.0°C | 4.0°C | 232 | 18.4 | 9.29 h |
| December | 5.7°C1.4°C | 1.4°C | 198 | 17.7 | 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
April in nearby cities
- New Westminster in AprilCanada · 17 kmHigh 12.6°C · Low 3.5°C · 175 mm rain
- Surrey in AprilCanada · 17 kmHigh 12.7°C · Low 3.8°C · 129 mm rain
- Vancouver in AprilCanada · 18 kmHigh 11.9°C · Low 5.0°C · 175 mm rain
- Burnaby in AprilCanada · 21 kmHigh 12.3°C · Low 4.4°C · 175 mm rain
- North Vancouver in AprilCanada · 25 kmHigh 12.0°C · Low 4.8°C · 175 mm rain
- Langley in AprilCanada · 29 kmHigh 13.1°C · Low 3.9°C · 129 mm rain
- Coquitlam in AprilCanada · 29 kmHigh 13.0°C · Low 3.9°C · 198 mm rain
- Maple Ridge in AprilCanada · 36 kmHigh 12.8°C · Low 3.2°C · 224 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 Delta) is explained once on the Delta year overview and on the Sources, method and limits page.