Cool
Average highs are around 19°C, so pack for cooler days.
May verdict
Mixed for holiday weather
Average highs are around 19°C, so pack for cooler days. Sunshine averages 8.7h per day, so bright days are a strong part of the month. Rainfall averages 41mm, which is relatively low for holiday planning.
Monthly averages
Temp
19°C
Rain
41mm
Sun
8.7h
Weather score
49
Mixed
Cool
Average highs are around 19°C, so pack for cooler days.
Drier
Rainfall averages 41mm, which is relatively low for holiday planning.
Bright
Sunshine averages 8.7h per day, so bright days are a strong part of the month.
Map
Compare Lake Diefenbaker, Canada with nearby places by weather score, rain, sun, temperature, and swim conditions.
May19°C average high
May sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsMay to September
This stretch sets the upper range for average daytime heat.
May41mm average rain
May is wetter than Lake Diefenbaker's yearly average, so flexible plans matter more.
Driest monthsJanuary to May and August to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
May8.7 hours average sun
May is brighter than Lake Diefenbaker's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
May49 weather score
May sits close to Lake Diefenbaker's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJuly to August
These months have the strongest weather score in the monthly averages.
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