Weatheo

Chatham weather by month

Warmest month

July

28°C average high

Coolest month

January

-7°C average low

Wettest month

April

65 mm of rain

Driest month

February

13 mm of rain

Average temperature and rainfall in Chatham by month

Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.

MonthAvg highAvg lowRecord low / highRainfallHumidityWind
January0°C-7°C-20°C / 11°C
30 mm
81%16 km/h
February2°C-7°C-20°C / 40°C
13 mm
80%18 km/h
March7°C-2°C-14°C / 18°C
37 mm
74%17 km/h
April13°C4°C-6°C / 28°C
65 mm
72%16 km/h
May20°C9°C0°C / 30°C
52 mm
72%14 km/h
June25°C15°C9°C / 32°C
65 mm
70%13 km/h
July28°C18°C11°C / 34°C
52 mm
72%11 km/h
August26°C17°C10°C / 32°C
60 mm
76%11 km/h
September24°C14°C6°C / 33°C
50 mm
77%12 km/h
October17°C9°C-2°C / 29°C
52 mm
77%14 km/h
November10°C4°C-5°C / 23°C
36 mm
78%16 km/h
December4°C-2°C-16°C / 14°C
37 mm
82%16 km/h

Frost and snow-likely months in Chatham

Nights in Chatham average 2°C or below in 4 months (January, February, March and December). January, February, March and December combine average lows at or below 0°C with 10 mm or more of monthly precipitation, so precipitation then is likely to fall as snow. The coldest month is January with an average low of -7°C and a record low of -20°C.

  • January: average low -7°C, record low -20°C, 30 mm of precipitation — snow-likely
  • February: average low -7°C, record low -20°C, 13 mm of precipitation — snow-likely
  • March: average low -2°C, record low -14°C, 37 mm of precipitation — snow-likely
  • December: average low -2°C, record low -16°C, 37 mm of precipitation — snow-likely

These records carry temperature and precipitation, not snowfall totals.

Best time to visit Chatham

The most comfortable time to visit Chatham is generally June and August to September, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around April, totalling about 549 mm a year.

Travellers who prefer heat should aim for July, when highs average 28°C. April is the month to avoid if rain would spoil your plans — it averages 65 mm, roughly 5× the rainfall of the driest month (February).

Chatham climate: your questions

Does it snow in Chatham?

Yes, in winter: January, February, March and December average lows at or below 0°C with 10 mm or more of monthly precipitation, so some of it falls as snow. The coldest month is January (average low -7°C, record low -20°C). Our records carry temperature and precipitation, not snowfall totals. What is falling now: Chatham weather today.

Will Chatham get snow this winter?

Chatham's winter months average lows of -2°C in December, -7°C in January and -7°C in February, with about 80 mm of precipitation across the three; 3 of them sit at or below 0°C, so snow is likely on the colder days. The records hold no snowfall totals. The next 15 days: Chatham 10-day forecast.

Which months are best for visiting Chatham?

June and August to September are the most comfortable months in Chatham, with highs near 25°C. July is the warmest month, averaging 28°C by day; April is the wettest, with 65 mm; and January is the coolest, with lows near -7°C. What it is doing today: Chatham weather today.

Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Chatham forecast for what is happening now.

Nearest cities: Monthly climate

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