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April in Alert brings very low temperatures, with highs of -18°C (0°F) and nights dropping to -25°C (-13°F). Rainfall is very low this month, averaging just 11 mm (0.4 in).
If you're looking for dry conditions and comfortable temperatures, April may not be the ideal month to visit Alert. Our weather planner can help you explore destinations with more pleasant weather conditions.
Pick a month to see the average temperature, rainfall and sunshine in Alert - and find the best time to visit.
48-year average (1976-2025)
Based on our historical records, temperatures in Alert typically rise from around -25°C (-13°F) at the start of April to approximately -15°C (5°F) by the end. Nights are very cold, with lows typically ranging from -31°C (-24°F) to -20°C (-4°F).
Browse day-by-day weather records for Alert spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Based on weather observations in Alert between 2001 and 2026, these are the recorded extremes during April.
Find out more about the weather in Canada and which places have the best travel conditions in this month. See all of Canada in April →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
We recommend you pack up your warm winter gear for Alert in April. If you have insulated boots, thermal layers, and a heavy winter coat that can handle snow and freezing temperatures it's smart to bring them. Don't forget gloves, a warm hat, and a scarf. Almost no rain is expected, so no need to bring rain gear. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Alert climate overview or explore weather in Canada.
Where to go in April - average daytime high across popular destinations.
Need travel inspiration? Check out our bucket list articles and be inspired.
The 5 most beautiful lakes in Canada
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