ClimateAverages

Dartmouth Climate

Nova Scotia, Canada · population 101,343 · 190 weather stations within 200 km · records 1750 to 2025

Average annual daytime high
10.5°C
Warmest month · August
22.0°C
Typical daytime high
Coldest month · February
-9.0°C
Typical overnight low

Dartmouth has an average annual daytime high of 10.5°C, based on the 1951 to 1980 baseline. Its warmest month is August, when highs typically reach 22.0°C, and its coldest is February, with overnight lows near -9.0°C.

Month by month averages

MonthAvg highAvg low
January-0.5°C-8.4°C
February-0.7°C-9.0°CColdest
March2.7°C-4.7°C
April7.7°C-0.3°C
May13.5°C4.1°C
June18.5°C8.9°C
July21.9°C12.7°C
August22.0°C13.1°CWarmest
September18.6°C9.6°C
October13.2°C4.8°C
November7.8°C0.9°C
December1.9°C-5.5°C

Temperature range across the year

-11°-2°6°15°24°JanFebMarAprMayJunJulAugSepOctNovDec
Daytime high Overnight low
Hottest year on record
2005
+2.0°C vs. 1951–1980
Coldest year on record
1812
-2.3°C vs. 1951–1980

These figures reflect annual averages, not single-day records. Daily observations are outside this dataset's precision.

Is Dartmouth getting hotter?

Since 1900, Dartmouth's average temperature has risen by +2.0°C. Compared to the earliest station records that begin in 1750, warming totals +2.4°C.

5.4°6.1°6.8°7.5°8.2°1951–1980 baseline190019251950197520002025

20-year smoothed annual temperature reconstructed from station anomalies. Dashed line: 1951–1980 baseline.

Best time to visit
June to September

Daytime highs sit within a comfortable 15°C to 26°C range.

FAQ

What is the average temperature in Dartmouth?

Dartmouth's average annual daytime high is 10.5°C, based on the 1951 to 1980 baseline period. The warmest month is August, with highs averaging 22.0°C, and the coldest is February, with lows averaging -9.0°C.

What is the warmest month in Dartmouth?

August is the warmest month in Dartmouth, with typical daytime highs of 22.0°C.

What is the hottest year on record for Dartmouth?

2005 is the hottest year on record for Dartmouth, running +2.0°C above the 1951 to 1980 baseline.

Is Dartmouth getting hotter?

Yes. Since 1900, Dartmouth has warmed by roughly +2.0°C.

When is the best time to visit Dartmouth?

June to September typically offers the most comfortable daytime highs, in the 15°C to 26°C range.

Nearby cities

Baseline period 1951 to 1980. Monthly averages are the mean of station observations weighted by proximity. Warming trend is the 20-year smoothed anomaly against that baseline.