Avg High
Whistler in May
Avg Low
Rain
Daylight
15h
What to expect
In Whistler, May sits in late spring, a shoulder-season month where the feel can shift as the season turns. Most days sit on the cooler side, with evenings that ease back comfortably. Comfort is usually predictable, so a standard day plan works well. You get long daylight windows for full-day exploring.
May in context
How it compares to the rest of the year in Whistler.
Hottest (avg)
#5 / 12
Wettest (avg)
#9 / 12
Daylight Hours
#3 / 12
Windiest (avg)
#11 / 12
Highest UV
#3 / 12
Most Humid
#9 / 12
Monthly climate breakdown
Temperature
- Daytime high
-
- Nighttime low
-
- Feels like (avg)
-
Sunshine
- Daylight hours
- 15.5 h
- UV index (max)
- 8
- Typical sun hours
- 04:24 - 19:52
Rain & Snow
- Total rain
-
- Rainy days
- 17 days
- Cloud cover (avg)
- 71%
- Snowfall
-
Humidity & Wind
- Humidity (avg)
- 76%
- Wind (avg)
-
- Wind (max gusts)
-
Daily climate explorer
Day 15 selected for May. Typical high 14.9°C and low 3.9°C.
Typical disruptions in May
Based on 30 years of historical data, these are the disruption patterns most likely to affect plans in May.
Cold High impact
Cold feels-like nights Measures: Cold feels-like nights (min <=5C). Observed about 78% of days (24.3 days/month) in May. Historical risk signal only, not a day-by-day forecast.
24.3 days / month
~78% of days
Why this matters
- Expected days 24.3 days / month
- Probability ~78% of days
- Intensity Up to ~5°C (P95)
Cold feels-like nights are possible on ~24 days. Long outdoor blocks become harder to sustain, so layer up and keep a warm indoor fallback nearby.
Snow High impact
Snow days Measures: Snow days (>=0.1mm snowfall). Observed about 31% of days (9.5 days/month) in May. Historical risk signal only, not a day-by-day forecast.
9.5 days / month
~31% of days
Why this matters
- Expected days 9.5 days / month
- Probability ~31% of days
- Intensity Up to ~14mm (P95)
Snowfall is possible on ~10 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Rain High impact
Rain disruption Measures: Likely rain disruption days. Observed about 27% of days (8.4 days/month) in May. Historical risk signal only, not a day-by-day forecast.
8.4 days / month
~27% of days
Why this matters
- Expected days 8.4 days / month
- Probability ~27% of days
- Intensity Up to ~27mm (P95)
Rain disruption risk appears on ~8 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Rain High impact
Washout risk Measures: Washout day risk. Observed about 27% of days (8.4 days/month) in May. Historical risk signal only, not a day-by-day forecast.
8.4 days / month
~27% of days
Why this matters
- Expected days 8.4 days / month
- Probability ~27% of days
- Intensity Up to ~27mm (P95)
Washout conditions are possible on ~8 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Rain High impact
Heavy rain days Measures: Heavy rain days (>=10mm). Observed about 12% of days (3.7 days/month) in May. Historical risk signal only, not a day-by-day forecast.
3.7 days / month
~12% of days
Why this matters
- Expected days 3.7 days / month
- Probability ~12% of days
- Intensity Up to ~33mm (P95)
Heavy rain is possible on ~4 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Wind High impact
Stormy conditions Measures: Storm-impact proxy days. Observed about 5% of days (1.7 days/month) in May. Historical risk signal only, not a day-by-day forecast.
1.7 days / month
~5% of days
Why this matters
- Expected days 1.7 days / month
- Probability ~5% of days
- Intensity Up to ~74km/h (P95)
Stormy conditions are possible on ~2 days. Exposed activities and transport links are more likely to be disrupted, so keep sheltered alternatives ready.
Show all disruptions (18 more)
Rain High impact
Washout run Measures: Multi-day washout runs. Observed about 2.2 days/month in May. Historical risk signal only, not a day-by-day forecast.
2.2 days / month
Probability unavailable
Why this matters
- Expected days 2.2 days / month
- Probability —
- Intensity Up to ~27mm (P95)
Multi-day washout runs are possible on ~2 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Wind High impact
Strong gusts Measures: Strong gust days (>=60 km/h). Observed about 3% of days (0.8 days/month) in May. Historical risk signal only, not a day-by-day forecast.
0.8 days / month
~3% of days
Why this matters
- Expected days 0.8 days / month
- Probability ~3% of days
- Intensity Up to ~82km/h (P95)
Strong gusts are possible on ~1 days. Exposed activities and transport links are more likely to be disrupted, so keep sheltered alternatives ready.
Rain High impact
Very heavy rain Measures: Very heavy rain days (>=25mm). Observed about 2% of days (0.6 days/month) in May. Historical risk signal only, not a day-by-day forecast.
0.6 days / month
~2% of days
Why this matters
- Expected days 0.6 days / month
- Probability ~2% of days
- Intensity Up to ~38mm (P95)
Very heavy rain is possible on ~1 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Visibility Moderate
Fog-likely signal Measures: Fog-likely visibility proxy. Observed about 10% of days (3.0 days/month) in May. Historical risk signal only, not a day-by-day forecast.
3.0 days / month
~10% of days
Why this matters
- Expected days 3.0 days / month
- Probability ~10% of days
- Intensity Up to ~97% (P95)
Fog-likely conditions are possible on ~3 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Cloud Minor
Cloudy days Measures: Cloudy days (cloud cover >=60%). Observed about 71% of days (21.9 days/month) in May. Historical risk signal only, not a day-by-day forecast.
21.9 days / month
~71% of days
Why this matters
- Expected days 21.9 days / month
- Probability ~71% of days
- Intensity Up to ~100% (P95)
Cloudy skies are possible on ~22 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Rain Minor
Wet days Measures: Wet days (>=0.1mm). Observed about 63% of days (19.4 days/month) in May. Historical risk signal only, not a day-by-day forecast.
19.4 days / month
~63% of days
Why this matters
- Expected days 19.4 days / month
- Probability ~63% of days
- Intensity Up to ~20mm (P95)
Measurable rain is possible on ~19 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Cold Minor
Cold nights Measures: Cold nights (min <=5C). Observed about 60% of days (18.5 days/month) in May. Historical risk signal only, not a day-by-day forecast.
18.5 days / month
~60% of days
Why this matters
- Expected days 18.5 days / month
- Probability ~60% of days
- Intensity Up to ~5°C (P95)
Cold nights are possible on ~19 days. Long outdoor blocks become harder to sustain, so layer up and keep a warm indoor fallback nearby.
Rain Minor
Rainy hours Measures: Rain-hours signal (>=3h rain). Observed about 55% of days (17.0 days/month) in May. Historical risk signal only, not a day-by-day forecast.
17.0 days / month
~55% of days
Why this matters
- Expected days 17.0 days / month
- Probability ~55% of days
- Intensity Up to ~24h (P95)
Several rainy hours are possible on ~17 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Cloud Minor
Mostly cloudy days Measures: Mostly cloudy days (cloud cover >=80%). Observed about 49% of days (15.1 days/month) in May. Historical risk signal only, not a day-by-day forecast.
15.1 days / month
~49% of days
Why this matters
- Expected days 15.1 days / month
- Probability ~49% of days
- Intensity Up to ~100% (P95)
Mostly cloudy skies are possible on ~15 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Rain Minor
Wet most of day Measures: Wet-most-of-day signal (>=6h rain). Observed about 46% of days (14.3 days/month) in May. Historical risk signal only, not a day-by-day forecast.
14.3 days / month
~46% of days
Why this matters
- Expected days 14.3 days / month
- Probability ~46% of days
- Intensity Up to ~24h (P95)
Wet-most-of-day conditions are possible on ~14 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Humidity Minor
High humidity Measures: High humidity days (RH >=80%). Observed about 42% of days (13.0 days/month) in May. Historical risk signal only, not a day-by-day forecast.
13.0 days / month
~42% of days
Why this matters
- Expected days 13.0 days / month
- Probability ~42% of days
- Intensity Up to ~95% (P95)
High humidity is possible on ~13 days. Comfort and pace can drop quickly, so plan shorter outdoor blocks with air-conditioned backup stops.
Wind Minor
Gusty days Measures: Gusty days (>=40 km/h). Observed about 29% of days (9.0 days/month) in May. Historical risk signal only, not a day-by-day forecast.
9.0 days / month
~29% of days
Why this matters
- Expected days 9.0 days / month
- Probability ~29% of days
- Intensity Up to ~66km/h (P95)
Gusty conditions are possible on ~9 days. Exposed activities and transport links are more likely to be disrupted, so keep sheltered alternatives ready.
Cold Minor
Cold days Measures: Cold days (max <=10C). Observed about 28% of days (8.6 days/month) in May. Historical risk signal only, not a day-by-day forecast.
8.6 days / month
~28% of days
Why this matters
- Expected days 8.6 days / month
- Probability ~28% of days
- Intensity Up to ~10°C (P95)
Cold daytime conditions are possible on ~9 days. Long outdoor blocks become harder to sustain, so layer up and keep a warm indoor fallback nearby.
Cloud Minor
Overcast days Measures: Overcast days (cloud cover >=95%). Observed about 23% of days (7.2 days/month) in May. Historical risk signal only, not a day-by-day forecast.
7.2 days / month
~23% of days
Why this matters
- Expected days 7.2 days / month
- Probability ~23% of days
- Intensity Up to ~100% (P95)
Overcast skies are possible on ~7 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Other Minor
Low visibility proxy: same as fog-likely (RH ≥90% AND cloud ≥95%) — true visibility requires hourly visibility data Measures: Low visibility proxy: same as fog-likely (RH ≥90% AND cloud ≥95%) — true visibility requires hourly visibility data. Observed about 10% of days (3.0 days/month) in May. Historical risk signal only, not a day-by-day forecast.
3.0 days / month
~10% of days
Why this matters
- Expected days 3.0 days / month
- Probability ~10% of days
- Intensity Up to ~97 (P95)
Low visibility proxy: same as fog-likely (RH ≥90% AND cloud ≥95%) — true visibility requires hourly visibility data is possible on ~3 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Other Minor
Heavy snowfall (INACTIVE until snowfall_sum units confirmed; set threshold once units are verified) Measures: Heavy snowfall (INACTIVE until snowfall_sum units confirmed; set threshold once units are verified). Observed about 8% of days (2.5 days/month) in May. Historical risk signal only, not a day-by-day forecast.
2.5 days / month
~8% of days
Why this matters
- Expected days 2.5 days / month
- Probability ~8% of days
- Intensity Up to ~21 (P95)
Heavy snowfall (INACTIVE until snowfall_sum units confirmed; set threshold once units are verified) is possible on ~2 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Cold Minor
Cold snap run Measures: Cold snap runs (>=3 cold days). Observed about 1.0 days/month in May. Historical risk signal only, not a day-by-day forecast.
1.0 days / month
Probability unavailable
Why this matters
- Expected days 1.0 days / month
- Probability —
- Intensity Up to ~9°C (P95)
Cold snap runs are possible on ~1 days. Long outdoor blocks become harder to sustain, so layer up and keep a warm indoor fallback nearby.
Cold Minor
Freezing nights Measures: Freezing nights (min <=0C). Observed about 3% of days (0.9 days/month) in May. Historical risk signal only, not a day-by-day forecast.
0.9 days / month
~3% of days
Why this matters
- Expected days 0.9 days / month
- Probability ~3% of days
- Intensity Up to ~-0°C (P95)
Freezing nights are possible on ~1 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Frequently asked questions
Is May a good time to visit Whistler?
Typical May days in Whistler reach highs of 13°C (55°F) with nights around 5°C (41°F). It usually feels cool by day and cold after dark. Overall, May sits in the middle of the Whistler climate range.
What are temperatures like in May?
In May, you can usually expect highs of 13°C (55°F) and lows near 5°C (41°F). That means cool days and cold nights, so pack layers you can add or remove.
How much does it rain in May?
Rainfall in May averages 118 mm (4.6 in) across roughly 17 days. Overall it is a very wet time of year, so a light rain jacket and waterproof shoes are very handy.
How many hours of daylight are there in May?
You can expect about 15 hours of daylight in May. Sunrise is typically around 04:24 and sunset near 19:52. Very long days give you plenty of daylight for exploring.
How strong is the sun in May?
UV levels are often high (around 8). Regular sunscreen and a hat are recommended.
Is it windy in May?
In May, average wind speeds are around 4 km/h (2 mph), with gusts on the windiest days reaching about 50 km/h (31 mph). On the ground, it is it can feel quite windy at times, particularly when weather systems move through.