Mayo Weather in September
Mayo in September sees low daytime temperatures of 12°C (54°F) and nighttime lows of 2°C (36°F). Moderate rainfall is typical, with around 52 mm (2 in) for the month.
Rainfall in Mayo in September
Climate statistics over the past 30 years suggest around 12 days of rain, with 52 mm (2 in) average for the month. Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.
Temperature in Mayo in September
Daytime temperatures in Mayo reach 12°C (54°F) in September, dropping to 2°C (36°F) at night. Temperatures remain on the cold side all day. A proper warm jacket is worth having, not just for evenings. Nights drop to 2°C (36°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.
Wind Speed in Mayo in September
September has wind speeds averaging 1 m/s (2 knots). You can expect very gentle conditions with light air movement on typical days. Since this is an average, daily weather varies from perfectly still moments to some breezier days.Should you favor a climate that's both dry and comfortably warm, June and July typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Canada, check out our Mayo's climate page.
Mayo Temperature in September
Min Temperature
2°C (36°F)
Max Temperature
12°C (54°F)
Chance of Rain
39%
Precipitation
52 mm (2 in)
Rainy days
12 days
Humidity
56%
Windspeed
1 m/s (2 knots)
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Mayo typically drop from around 15°C (59°F) at the start of September to approximately 8°C (46°F) by the end. Nights are cold, with lows typically ranging from -1°C (30°F) to 4°C (39°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Mayo in September
Browse day-by-day weather records for Mayo spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Mayo historical weather extremes in September
According to our 49 years of weather records for Mayo, the following extremes were recorded between 1976 and 2025.
- The warmest day in September was on September 23, 1995, with a maximum of 25°C (77°F).
- Nighttime temperatures dropped to -15°C (5°F) on September 27, 1983, marking the coldest September night on record.
Best Places in Canada in September
Find out more about the weather in Canada and which places have the best travel conditions in this month. See all of Canada in September →
perfect weather
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tolerable
unpleasant
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What to Wear in Mayo in September
Pack for changing conditions in Mayo in September. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Rain gear is recommended, you can expect wet weather on multiple days.What To Do in Mayo in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Canada, check out our Mayo's climate page.
Temperature Rainfall Humidity Wind Speed
See the full Mayo climate overview or explore weather in Canada.
