Brant Weather in May (1981–2025)

📍 43.12°N, 80.37°W •
📊

May at a Glance in Brant

(1981–2025)
Avg High
🔥
19.0°C
Avg Low
❄️
7.5°C
Avg Temp
🌡️
13.3°C
Avg Rain
🌧️
67 mm
Avg Humidity
💧
72%
Avg Wind
🌬️
3.6 m/s
Avg Solar
☀️
5.5
kWh/m²/day
vs Annual
📈
+4.7°C
temp difference
🌤️Mild afternoons❄️Cold mornings☀️Very sunny🌧️Wet month💨Breezy😊Comfortable humidity

Brant May Weather Overview

May is one of the warmer months of the year in Brant, with average highs near 19°C and lows around 7.5°C (mean 13.3°C). It is about average for rainfall, averaging 67 mm of rainfall and 72% relative humidity across the period.

Brant May Temperature History (1981–2025)

Range

May is one of the warmer months of the year in Brant. Across 45 years of records, the warmest Mays in Brant were 1998 and 2012 — when the month averaged 16.8°C — while the coldest was 1997 at 8.7°C. Typical May days reach 19°C with nights near 7.5°C. The long-term trend is warming, about 0.4°C per decade.

1981–1985 vs 2021–2025

Avg Temp12.1°C→14.6°C+2.5°C
Max Temp17.6°C→20.7°C+3.1°C
Min Temp6.6°C→8.5°C+1.9°C

Trend (per decade)

Avg Temp+0.4°C/decade ↗
Max Temp+0.5°C/decade ↗
Min Temp+0.3°C/decade ↗

Distribution of Avg Temp

8.0°C–10.3°C4 yr (9%)
10.3°C–12.5°C10 yr (22%)
12.5°C–14.8°C21 yr (47%)
14.8°C–17.0°C10 yr (22%)

Brant May Rainfall History (1981–2025)

Range

May is about average for rainfall in Brant, averaging 67 mm of rainfall. The wettest May on record was 2000 with 145 mm, while the driest was 2021 at 23 mm.

Brant May Humidity History (1981–2025)

Range

Relative humidity in Brant during May averages 72%. The most humid May was 2004 at 82%, and the least humid was 2021 at 59%.

Brant May Solar History (1981–2025)

Range

May receives about 5.5 kWh/m²/day of solar energy in Brant. The sunniest May was 2023 at 6.4 kWh/m²/day, and the cloudiest was 2011 at 4.5.

Brant May Wind History (1981–2025)

Range

Average wind speed in Brant during May is 3.6 m/s. The windiest May was 1997 at 4.4 m/s, while the calmest was 1982 at 2.8 m/s.

What May Feels Like in Brant

🌅
Cold
Morning
🌞
Mild
Afternoon
🌆
Cool
Evening
Rain chanceModerate
Outdoor comfort★★★☆☆

How May Ranks in Brant

🔥5th warmest month of the year
🌧️4th wettest month of the year
☀️3rd sunniest month of the year

Ranked against the other 11 months using 1981–2025 averages.

Explore Brant Weather by Month

Brant May Averages by Decade

Metric1980s1990s2000s2010s2020sChange
Avg Temp12.9°C12.7°C12.5°C14.2°C14.2°C+1.3°C
Avg High18.5°C18.5°C18.1°C20.0°C20.2°C+1.7°C
Avg Low7.3°C6.9°C6.8°C8.4°C8.2°C+0.9°C
Avg Rain71 mm65 mm78 mm72 mm38 mm-33 mm

Extreme May Records in Brant

🔥Warmest May32.3°C2006
🧊Coldest May-3.3°C1986
🌧️Wettest May145 mm2000
🏜️Driest May23 mm2021
🌬️Windiest May4.4 m/s1997

Key Insights for May

✅

May temperatures in Brant have risen by about 2.5°C between 1981–1985 and 2021–2025.

✅

May has ranged from a record low of -3.3°C (1986) to a record high of 32.3°C (2006).

✅

Rainfall in May is about average for rainfall, averaging 67 mm, with a wettest year of 145 mm.

✅

Daytime highs and overnight lows have shifted differently — highs rose about 0.5°C per decade while lows rose 0.3°C per decade, widening the gap between day and night.

Is May a Good Time to Visit Brant?

A good time to visit Brant

May is a good time to visit Brant, with days averaging 19°C and nights around 7.5°C (mean 13.3°C, warmer than Brant's yearly average) and moderate rainfall. August and July are marginally more temperate, but May still suits most travellers.

See Brant's complete weather history All 12 months side by side, 1981–2025 records, annual trends and long-term averages in one place. View full history →

Brant Weather in May — In Depth

☀️ May climate overview

May is one of the warmer months of the year in Brant, with average highs near 19°C and lows around 7.5°C (mean 13.3°C). It is about average for rainfall, averaging 67 mm of rainfall and 72% relative humidity across the period.

🌧️ Rain, humidity & wind in May

May averages 67 mm of rainfall in Brant, about average for rainfall compared with the rest of the year. The wettest May on record saw 145 mm (2000), and the driest just 23 mm (2021). Humidity sits around 72% and average wind speed is 3.6 m/s, with solar radiation averaging 5.5 kWh/m²/day.

📈 How May has changed

Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 2.5°C. Daytime highs moved from 17.6°C to 20.7°C and overnight lows from 6.6°C to 8.5°C over the same span.
May Weather in Brant, Year by Year
🔥 warmest❄️ coldest🌧️ wettest
YearAvg HighAvg TempAvg LowHottest DayColdest DayRainfallHumidityWindSolar
202518.9°C13.5°C8.1°C28.3°C2.1°C38 mm69%4.2 m/s5
202422.8°C16.7°C10.6°C29.2°C6.0°C57 mm67%3.2 m/s5.6
202320.7°C13.9°C7.1°C30.2°C1.2°C23 mm59%3 m/s6.4
202221.1°C15.1°C9.2°C30.1°C1.8°C55 mm68%3.5 m/s5.7
202120.0°C13.8°C7.6°C30.1°C-1.0°C23 mm59%3.4 m/s5.7
202017.8°C12.2°C6.5°C30.5°C-2.7°C33 mm70%3.8 m/s5.5
201918.2°C12.2°C6.3°C25.3°C0.5°C68 mm79%3.6 m/s4.6
201822.6°C15.9°C9.3°C31.2°C1.5°C74 mm73%3.4 m/s6.1
201716.9°C12.1°C7.2°C26.5°C-0.7°C96 mm78%4 m/s5.3
201619.0°C13.5°C7.9°C29.4°C1.0°C43 mm72%3.1 m/s6
201521.5°C15.3°C9.1°C27.7°C1.5°C69 mm71%3.4 m/s5.7
201418.8°C13.3°C7.7°C25.1°C0.3°C77 mm77%3.3 m/s5.5
201319.9°C14.1°C8.2°C26.6°C-0.2°C93 mm75%3.6 m/s6.1
201223.2°C16.8°C10.4°C30.6°C3.1°C64 mm64%3 m/s6.2
201118.4°C13.4°C8.5°C28.2°C2.1°C82 mm81%3.6 m/s4.5
201021.2°C15.5°C9.7°C31.4°C-0.4°C50 mm68%3.7 m/s5.8
200919.3°C12.9°C6.5°C25.5°C-0.8°C45 mm68%3.8 m/s6.1
200817.6°C11.6°C5.7°C24.7°C0.8°C43 mm69%3.8 m/s5.5
200721.5°C14.7°C8.0°C31.0°C1.7°C30 mm62%3.2 m/s6.2
200620.0°C14.4°C8.7°C32.3°C2.0°C44 mm68%3.4 m/s5.5
200516.9°C11.4°C5.8°C24.2°C-0.8°C32 mm71%3.1 m/s5.6
200418.2°C12.6°C7.1°C26.4°C-2.1°C127 mm82%3.5 m/s4.9
200316.6°C11.5°C6.3°C22.3°C0.8°C114 mm80%3.9 m/s4.8
200214.6°C9.3°C3.9°C22.9°C-2.2°C95 mm79%3.9 m/s5.3
200118.4°C13.0°C7.7°C24.6°C0.6°C108 mm77%3.4 m/s5.5
2000 🌧️18.3°C13.2°C8.1°C24.9°C3.4°C145 mm81%3.8 m/s5.1
199920.5°C14.3°C8.2°C28.9°C2.7°C53 mm68%3.5 m/s6.3
1998 🔥22.8°C16.8°C10.8°C29.8°C4.7°C32 mm69%3.3 m/s6.1
1997 ❄️14.1°C8.7°C3.2°C20.6°C-1.6°C102 mm76%4.4 m/s5.1
199616.7°C11.2°C5.6°C25.0°C-1.1°C69 mm73%3.7 m/s5.7
199518.4°C12.7°C7.0°C24.9°C0.5°C61 mm69%3.6 m/s5.3
199417.4°C11.3°C5.3°C28.2°C-0.3°C61 mm70%3.7 m/s5.4
199318.3°C12.3°C6.4°C26.8°C2.1°C52 mm71%3.7 m/s5.1
199219.0°C12.7°C6.3°C26.7°C1.2°C39 mm67%3 m/s5.9
199121.4°C16.0°C10.6°C28.0°C1.0°C73 mm77%3.4 m/s5.6
199016.6°C11.2°C5.8°C21.9°C0.4°C104 mm73%4 m/s5.3
198917.8°C12.7°C7.5°C26.1°C0.4°C59 mm72%3.7 m/s5.1
198820.5°C14.1°C7.8°C30.5°C1.9°C56 mm68%3.4 m/s6
198721.4°C15.0°C8.6°C30.2°C0.3°C52 mm67%3.6 m/s6
198619.0°C13.7°C8.5°C26.9°C-3.3°C79 mm78%3.7 m/s5.5
198518.9°C13.3°C7.7°C25.2°C2.4°C65 mm76%3.9 m/s5.9
198414.8°C9.8°C4.7°C23.1°C-1.0°C74 mm80%4.1 m/s4.6
198315.5°C9.9°C4.3°C20.6°C-2.5°C125 mm79%4 m/s—
198220.6°C15.0°C9.5°C25.8°C3.4°C80 mm78%2.8 m/s—
198118.2°C12.5°C6.8°C25.9°C-0.4°C46 mm70%3.1 m/s—

Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.

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Brant May Weather — FAQ

What is the average temperature in Brant in May?▼

The average high in May is around 19°C with lows near 7.5°C (mean 13.3°C), based on 45 years of NASA POWER data.

Does it rain a lot in Brant in May?▼

May averages 67 mm of rainfall in Brant, about average for rainfall. The wettest on record was 145 mm in 2000.

What was the hottest May on record in Brant?▼

The hottest May reached 32.3°C in 2006. The coldest dipped to -3.3°C in 1986.

Has May in Brant gotten warmer over time?▼

Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 2.5°C. Daytime highs moved from 17.6°C to 20.7°C and overnight lows from 6.6°C to 8.5°C over the same span.

Is May a good time to visit Brant?▼

May is one of the warmer months of the year in Brant and about average for rainfall, so plan for around 19°C daytime highs and 7.5°C at night.

Is May the coldest month in Brant?▼

Not quite — May is the 8th coolest month in Brant, averaging 13.3°C.

What should I pack for Brant in May?▼

For May in Brant, pack warm layers and a jacket for chilly mornings, with typical highs of 19°C and lows of 7.5°C. Bring an umbrella or light rain jacket too.

Is Brant humid in May?▼

Relative humidity in May averages 72% — moderately humid.

How windy is Brant in May?▼

Average wind speed in May is 3.6 m/s. The windiest May on record averaged 4.4 m/s (1997).

Which May had the most rainfall in Brant?▼

The wettest May on record was 2000 with 145 mm. On average, May sees 67 mm.

Where does this May weather data come from?▼

All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.

Other Ontario cities

Explore how the weather in Brant 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.