Whitby, Ontario Weather by Month and Climate Averages

How much rain does Whitby get?

Whitby gets 724 mm of precipitation in an average year, spread over about 121 days with measurable rain. That is more rainy days than 51% of Canada.

June is the wettest month, with 82 mm. February is the driest, with 37 mm. October has the most rainy days, about 13.

The longest dry spell in the last five years lasted 17 days, to June 10, 2023.

Whitby weather by month

Whitby weather in January

In January, Whitby averages a high of -1°C and a low of -9°C. It gets 51 mm of precipitation over about 10 rainy days. The sun is out about 21% of daylight hours. The January record high is 12°C (2013) and the record low is -27°C (2018).

Whitby weather in February

In February, Whitby averages a high of -1°C and a low of -10°C. It gets 37 mm of precipitation over about 8 rainy days. The sun is out about 31% of daylight hours. The February record high is 18°C (2017) and the record low is -28°C (2023).

Whitby weather in March

In March, Whitby averages a high of 4°C and a low of -5°C. It gets 49 mm of precipitation over about 10 rainy days. The sun is out about 33% of daylight hours. The March record high is 23°C (2012) and the record low is -25°C (2015).

Whitby weather in April

In April, Whitby averages a high of 11°C and a low of 1°C. It gets 82 mm of precipitation over about 12 rainy days. The sun is out about 35% of daylight hours. The April record high is 27°C (2023) and the record low is -10°C (2016).

Whitby weather in May

In May, Whitby averages a high of 18°C and a low of 7°C. It gets 61 mm of precipitation over about 11 rainy days. The sun is out about 43% of daylight hours. The May record high is 31°C (2020) and the record low is -4°C (2020). May is one of the most comfortable months to visit.

Whitby weather in June

In June, Whitby averages a high of 24°C and a low of 13°C. It gets 82 mm of precipitation over about 10 rainy days. The sun is out about 45% of daylight hours. The June record high is 32°C (2012) and the record low is 2°C (2019).

Whitby weather in July

In July, Whitby averages a high of 27°C and a low of 16°C. It gets 61 mm of precipitation over about 9 rainy days. The sun is out about 48% of daylight hours. The July record high is 37°C (2011) and the record low is 8°C (2014).

Whitby weather in August

In August, Whitby averages a high of 26°C and a low of 14°C. It gets 70 mm of precipitation over about 9 rainy days. The sun is out about 46% of daylight hours. The August record high is 33°C (2016) and the record low is 7°C (2013). August is one of the most comfortable months to visit.

Whitby weather in September

In September, Whitby averages a high of 22°C and a low of 11°C. It gets 62 mm of precipitation over about 9 rainy days. The sun is out about 50% of daylight hours. The September record high is 32°C (2018) and the record low is 0°C (2020). September is one of the most comfortable months to visit.

Whitby weather in October

In October, Whitby averages a high of 14°C and a low of 4°C. It gets 74 mm of precipitation over about 13 rainy days. The sun is out about 38% of daylight hours. The October record high is 28°C (2019) and the record low is -7°C (2020).

Whitby weather in November

In November, Whitby averages a high of 7°C and a low of -2°C. It gets 45 mm of precipitation over about 10 rainy days. The sun is out about 36% of daylight hours. The November record high is 23°C (2022) and the record low is -17°C (2019).

Whitby weather in December

In December, Whitby averages a high of 2°C and a low of -6°C. It gets 50 mm of precipitation over about 12 rainy days. The sun is out about 20% of daylight hours. The December record high is 15°C (2021) and the record low is -27°C (2017).

Sunshine, humidity and wind in Whitby

September is the sunniest month in Whitby, with sunshine about 50% of daylight hours. December is the cloudiest, at 20%. Over the year the sun shines about 37% of daylight hours. Whitby is sunnier than 58% of Canada.

Humidity peaks in December at 79% and is lowest in May at 60%.

Whitby weather records

The hottest temperature on record at the Whitby station is 37°C, on July 21, 2011. The coldest is -28°C, on February 4, 2023.

The wettest day on record brought 59 mm of rain, on October 28, 2015.

The best time to visit Whitby

The most comfortable time to visit is typically May and August to September, when daytime highs sit near 22°C.

Winter (December–February) is cold, with average highs around 0°C and lows near -8°C.

Spring (March–May) is chilly, with average highs around 11°C and lows near 1°C.

Summer (June–August) is warm, with average highs around 25°C and lows near 14°C. It can feel humid.

Autumn (September–November) is mild, with average highs around 14°C and lows near 5°C.

Whitby climate questions

How much rain does Whitby get?

Whitby gets 724 mm of precipitation in an average year, over about 121 rainy days.

What is the wettest month in Whitby?

June is the wettest month in Whitby, with 82 mm. February is the driest, with 37 mm.

How many rainy days does Whitby have a year?

Whitby has about 121 days with measurable rain in an average year. October has the most, about 13.

What is the hottest month in Whitby?

July is the warmest month in Whitby, with an average high of 27°C.

What is the coldest month in Whitby?

February is the coldest month in Whitby, with an average low of -10°C.

What is the record high temperature in Whitby?

The record high at the Whitby station is 37°C, set on July 21, 2011. The record low is -28°C, on February 4, 2023.

What is the sunniest month in Whitby?

September is the sunniest month in Whitby, with sunshine about 50% of daylight hours. December is the cloudiest.

What is the best time to visit Whitby?

The most comfortable time to visit is typically May and August to September, when daytime highs sit near 22°C.