May is one of the warmer months of the year in Kamloops, with average highs near 15.3°C and lows around 1.9°C (mean 8.6°C). It is about average for rainfall, averaging 42 mm of rainfall and 67% relative humidity across the period.
May is one of the warmer months of the year in Kamloops. Across 45 years of records, the warmest May in Kamloops was 2023 — when the month averaged 13.2°C — while the coldest was 1984 at 4.6°C. Typical May days reach 15.3°C with nights near 1.9°C. The long-term trend is warming, about 0.4°C per decade.
May is about average for rainfall in Kamloops, averaging 42 mm of rainfall. The wettest May on record was 2011 with 93 mm, while the driest was 2007 at 14 mm.
Relative humidity in Kamloops during May averages 67%. The most humid May was 1990 at 76%, and the least humid was 1992 at 59%.
May receives about 5.5 kWh/m²/day of solar energy in Kamloops. The sunniest May was 2018 at 6.3 kWh/m²/day, and the cloudiest were 1990 and 2022 at 4.8.
Average wind speed in Kamloops during May is 0.3 m/s. The windiest Mays were 2020, 2021 and 2023, among others at 0.3 m/s, while the calmest were 2022, 2024 and 2025, among others at 0.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 7.9°C | 8.8°C | 8.2°C | 9.3°C | 9.0°C | +1.1°C |
| Avg High | 14.6°C | 15.6°C | 14.9°C | 15.9°C | 15.5°C | +0.9°C |
| Avg Low | 1.1°C | 2.1°C | 1.5°C | 2.6°C | 2.4°C | +1.3°C |
| Avg Rain | 40 mm | 40 mm | 39 mm | 47 mm | 42 mm | +2 mm |
May temperatures in Kamloops have risen by about 1.5°C between 1981–1985 and 2021–2025.
May has ranged from a record low of -5.6°C (2013) to a record high of 30.7°C (1983).
Rainfall in May is about average for rainfall, averaging 42 mm, with a wettest year of 93 mm.
A good time to visit Kamloops
May is a good time to visit Kamloops, with days averaging 15.3°C and nights around 1.9°C (mean 8.6°C, warmer than Kamloops's yearly average) and moderate rainfall. August and July are marginally more temperate, but May still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 15.8°C | 9.0°C | 2.2°C | 26.1°C | -1.2°C | 36 mm | 68% | 0.2 m/s | 5.8 |
| 2024 | 14.8°C | 8.2°C | 1.7°C | 25.4°C | -4.0°C | 33 mm | 67% | 0.2 m/s | 5.3 |
| 2023 🔥 | 20.0°C | 13.2°C | 6.4°C | 28.9°C | 1.9°C | 47 mm | 68% | 0.3 m/s | 5.9 |
| 2022 | 12.0°C | 6.1°C | 0.1°C | 17.7°C | -3.4°C | 45 mm | 72% | 0.2 m/s | 4.8 |
| 2021 | 15.0°C | 8.4°C | 1.7°C | 24.2°C | -4.1°C | 19 mm | 66% | 0.3 m/s | 5.7 |
| 2020 | 15.4°C | 8.9°C | 2.3°C | 21.8°C | -3.7°C | 70 mm | 71% | 0.3 m/s | 5.6 |
| 2019 | 18.2°C | 11.3°C | 4.3°C | 26.1°C | -0.1°C | 27 mm | 65% | 0.3 m/s | 5.5 |
| 2018 | 19.4°C | 12.2°C | 5.0°C | 27.0°C | -1.7°C | 21 mm | 67% | 0.3 m/s | 6.3 |
| 2017 | 16.3°C | 9.4°C | 2.5°C | 26.6°C | -4.0°C | 57 mm | 69% | 0.3 m/s | 5.8 |
| 2016 | 16.5°C | 10.3°C | 4.0°C | 25.2°C | -1.5°C | 54 mm | 66% | 0.3 m/s | 5.7 |
| 2015 | 17.8°C | 11.0°C | 4.1°C | 23.9°C | -4.1°C | 24 mm | 64% | 0.3 m/s | 6 |
| 2014 | 15.1°C | 9.0°C | 2.9°C | 23.2°C | -1.1°C | 46 mm | 70% | 0.3 m/s | 5.3 |
| 2013 | 16.3°C | 9.5°C | 2.6°C | 26.3°C | -5.6°C | 60 mm | 69% | 0.3 m/s | 5.8 |
| 2012 | 14.6°C | 7.4°C | 0.3°C | 24.9°C | -5.5°C | 19 mm | 63% | 0.3 m/s | 5.8 |
| 2011 🌧️ | 12.4°C | 6.2°C | 0.0°C | 19.0°C | -4.2°C | 93 mm | 74% | 0.3 m/s | 4.9 |
| 2010 | 12.7°C | 6.6°C | 0.5°C | 21.3°C | -4.1°C | 71 mm | 70% | 0.3 m/s | 5 |
| 2009 | 14.9°C | 7.9°C | 0.9°C | 25.5°C | -4.2°C | 33 mm | 65% | 0.3 m/s | 6.2 |
| 2008 | 15.9°C | 8.8°C | 1.7°C | 27.0°C | -4.2°C | 32 mm | 69% | 0.2 m/s | 5.1 |
| 2007 | 15.7°C | 8.1°C | 0.6°C | 25.4°C | -4.3°C | 14 mm | 65% | 0.2 m/s | 6.1 |
| 2006 | 16.4°C | 9.4°C | 2.4°C | 29.5°C | -4.9°C | 44 mm | 63% | 0.3 m/s | 5.4 |
| 2005 | 16.8°C | 10.4°C | 4.0°C | 28.9°C | -0.4°C | 37 mm | 67% | 0.3 m/s | 5.7 |
| 2004 | 15.2°C | 9.2°C | 3.2°C | 23.5°C | -0.9°C | 54 mm | 66% | 0.3 m/s | 5.1 |
| 2003 | 13.6°C | 7.2°C | 0.8°C | 24.7°C | -4.3°C | 26 mm | 68% | 0.3 m/s | 5 |
| 2002 | 12.9°C | 6.5°C | 0.1°C | 19.9°C | -4.9°C | 54 mm | 68% | 0.3 m/s | 5.1 |
| 2001 | 15.2°C | 8.0°C | 0.9°C | 26.5°C | -4.6°C | 31 mm | 65% | 0.2 m/s | 5.8 |
| 2000 | 12.7°C | 6.4°C | 0.1°C | 19.7°C | -4.3°C | 64 mm | 70% | 0.3 m/s | 5.4 |
| 1999 | 12.3°C | 5.6°C | -1.2°C | 24.8°C | -5.3°C | 35 mm | 68% | 0.2 m/s | 5.6 |
| 1998 | 18.7°C | 11.3°C | 3.9°C | 23.6°C | 0.5°C | 31 mm | 65% | 0.3 m/s | 6.2 |
| 1997 | 15.6°C | 8.8°C | 2.1°C | 25.0°C | -3.7°C | 47 mm | 70% | 0.3 m/s | 5.7 |
| 1996 | 11.1°C | 5.6°C | 0.1°C | 19.8°C | -4.0°C | 61 mm | 75% | 0.2 m/s | 5.2 |
| 1995 | 17.3°C | 10.0°C | 2.7°C | 26.0°C | -2.8°C | 20 mm | 60% | 0.3 m/s | 6.2 |
| 1994 | 16.8°C | 9.7°C | 2.6°C | 25.4°C | -3.6°C | 16 mm | 63% | 0.3 m/s | 5.7 |
| 1993 | 19.6°C | 12.0°C | 4.4°C | 29.2°C | -3.3°C | 30 mm | 63% | 0.3 m/s | 5.8 |
| 1992 | 17.4°C | 10.1°C | 2.9°C | 26.7°C | -4.4°C | 28 mm | 59% | 0.3 m/s | 5.6 |
| 1991 | 14.0°C | 7.8°C | 1.6°C | 20.1°C | -1.5°C | 43 mm | 74% | 0.2 m/s | 5.3 |
| 1990 | 13.4°C | 7.5°C | 1.6°C | 21.7°C | -2.1°C | 87 mm | 76% | 0.2 m/s | 4.8 |
| 1989 | 14.9°C | 8.4°C | 1.8°C | 22.1°C | -1.8°C | 75 mm | 68% | 0.3 m/s | 5.4 |
| 1988 | 14.7°C | 7.9°C | 1.1°C | 25.7°C | -3.2°C | 37 mm | 66% | 0.3 m/s | 4.9 |
| 1987 | 16.2°C | 9.3°C | 2.3°C | 25.7°C | -2.6°C | 26 mm | 62% | 0.3 m/s | 5.7 |
| 1986 | 14.1°C | 7.4°C | 0.7°C | 29.0°C | -5.5°C | 38 mm | 69% | 0.3 m/s | 5.5 |
| 1985 | 16.2°C | 9.0°C | 1.7°C | 25.1°C | -5.2°C | 38 mm | 66% | 0.3 m/s | 5.8 |
| 1984 ❄️ | 10.7°C | 4.6°C | -1.4°C | 20.5°C | -4.2°C | 40 mm | 72% | 0.2 m/s | 5.3 |
| 1983 | 16.9°C | 10.0°C | 3.0°C | 30.7°C | -2.3°C | 21 mm | 64% | 0.3 m/s | — |
| 1982 | 13.3°C | 6.3°C | -0.7°C | 22.3°C | -3.9°C | 32 mm | 69% | 0.3 m/s | — |
| 1981 | 14.0°C | 7.8°C | 1.7°C | 22.7°C | -2.1°C | 54 mm | 73% | 0.2 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 15.3°C with lows near 1.9°C (mean 8.6°C), based on 45 years of NASA POWER data.
May averages 42 mm of rainfall in Kamloops, about average for rainfall. The wettest on record was 93 mm in 2011.
The hottest May reached 30.7°C in 1983. The coldest dipped to -5.6°C in 2013.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 1.5°C. Daytime highs moved from 14.2°C to 15.5°C and overnight lows from 0.9°C to 2.4°C over the same span.
May is one of the warmer months of the year in Kamloops and about average for rainfall, so plan for around 15.3°C daytime highs and 1.9°C at night.
Not quite — May is the 8th coolest month in Kamloops, averaging 8.6°C.
For May in Kamloops, pack warm layers and a jacket for chilly mornings, with typical highs of 15.3°C and lows of 1.9°C.
Relative humidity in May averages 67% — moderately humid.
Average wind speed in May is 0.3 m/s. The windiest May on record averaged 0.3 m/s (1982).
The wettest May on record was 2011 with 93 mm. On average, May sees 42 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Kamloops behaves each May, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for May specifically, along with year-by-year records and how the month has changed over the decades.
