Climate averages 1991–2020
Vancouver, United States weather
in May.
A mild, moderately wet month: the 5th warmest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a mild month in Vancouver, United States: daytime highs average 18.5°C and nights cool to about 8.5°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 89 mm of rain on roughly 12 days, which makes May a moderately wet month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 53 min on an average May day.
The nearest other city in this atlas is Portland (13 km away). In May its highs average 18.8°C, about as warm as Vancouver, United States, with 70 mm of rain.
Among the 498 cities listed in the United States, Vancouver, United States ranks joint 461st of 498 for the warmest May highs and joint 283rd of 498 for the driest May (rainfall, lowest first). The mean May high of those 498 cities is 23.8°C; Vancouver, United States is 5.3°C cooler than that mean.
From May to June, average highs rise by 2.8°C to 21.3°C, and monthly rainfall falls from 89 mm to 60 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
Vancouver, United States climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.8°C1.4°C | 1.4°C | 209 | 18.3 | 9.19 h |
| February | 9.5°C1.7°C | 1.7°C | 156 | 15.4 | 10.310 h |
| March | 12.0°C3.2°C | 3.2°C | 178 | 18.3 | 11.912 h |
| April | 14.5°C5.2°C | 5.2°C | 142 | 16.6 | 13.513 h |
| May, selected | 18.5°C8.5°C | 8.5°C | 89 | 12.0 | 14.915 h |
| June | 21.3°C10.9°C | 10.9°C | 60 | 8.8 | 15.616 h |
| July | 26.4°C13.6°C | 13.6°C | 16 | 2.9 | 15.315 h |
| August | 26.9°C14.2°C | 14.2°C | 21 | 3.3 | 14.114 h |
| September | 23.5°C12.0°C | 12.0°C | 62 | 6.8 | 12.613 h |
| October | 16.5°C7.9°C | 7.9°C | 143 | 13.2 | 11.011 h |
| November | 10.5°C4.0°C | 4.0°C | 226 | 18.2 | 9.510 h |
| December | 7.2°C1.3°C | 1.3°C | 231 | 18.5 | 8.89 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
- Portland in MayUnited States · 13 kmHigh 18.8°C · Low 8.8°C · 70 mm rain
- Beaverton in MayUnited States · 20 kmHigh 18.5°C · Low 8.3°C · 70 mm rain
- Gresham in MayUnited States · 24 kmHigh 17.8°C · Low 7.9°C · 89 mm rain
- Hillsboro in MayUnited States · 29 kmHigh 18.6°C · Low 8.4°C · 69 mm rain
- Salem, United States in MayUnited States · 83 kmHigh 18.6°C · Low 8.2°C · 56 mm rain
- Eugene in MayUnited States · 180 kmHigh 18.0°C · Low 7.8°C · 82 mm rain
- Tacoma in MayUnited States · 180 kmHigh 17.2°C · Low 8.4°C · 61 mm rain
- Auburn in MayUnited States · 188 kmHigh 17.3°C · Low 8.0°C · 78 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 Vancouver) is explained once on the Vancouver, United States year overview and on the Sources, method and limits page.