Delta, British Columbia Weather by Month and Climate Averages

Delta weather by month

Delta weather in January

In January, Delta averages a high of 8°C and a low of 1°C. The sun is out about 17% of daylight hours. The January record high is 15°C (2015) and the record low is -16°C (2024).

Delta weather in February

In February, Delta averages a high of 8°C and a low of -1°C. The sun is out about 27% of daylight hours. The February record high is 17°C (2016) and the record low is -13°C (2014).

Delta weather in March

In March, Delta averages a high of 11°C and a low of 2°C. The sun is out about 32% of daylight hours. The March record high is 21°C (2024) and the record low is -8°C (2019).

Delta weather in April

In April, Delta averages a high of 15°C and a low of 4°C. The sun is out about 38% of daylight hours. The April record high is 29°C (2016) and the record low is -3°C (2021).

Delta weather in May

In May, Delta averages a high of 19°C and a low of 7°C. The sun is out about 38% of daylight hours. The May record high is 32°C (2023) and the record low is 1°C (2013).

Delta weather in June

In June, Delta averages a high of 22°C and a low of 9°C. The sun is out about 42% of daylight hours. The June record high is 38°C (2021) and the record low is 3°C (2012). June is one of the most comfortable months to visit.

Delta weather in July

In July, Delta averages a high of 24°C and a low of 11°C. The sun is out about 67% of daylight hours. The July record high is 33°C (2015) and the record low is 5°C (2011). July is one of the most comfortable months to visit.

Delta weather in August

In August, Delta averages a high of 24°C and a low of 11°C. The sun is out about 60% of daylight hours. The August record high is 34°C (2021) and the record low is 6°C (2011). August is one of the most comfortable months to visit.

Delta weather in September

In September, Delta averages a high of 21°C and a low of 9°C. The sun is out about 50% of daylight hours. The September record high is 31°C (2017) and the record low is 0°C (2016). September is one of the most comfortable months to visit.

Delta weather in October

In October, Delta averages a high of 14°C and a low of 5°C. The sun is out about 35% of daylight hours. The October record high is 24°C (2022) and the record low is -5°C (2019).

Delta weather in November

In November, Delta averages a high of 10°C and a low of 2°C. The sun is out about 27% of daylight hours. The November record high is 19°C (2016) and the record low is -11°C (2014).

Delta weather in December

In December, Delta averages a high of 7°C and a low of 0°C. The sun is out about 22% of daylight hours. The December record high is 16°C (2015) and the record low is -15°C (2021).

Sunshine, humidity and wind in Delta

July is the sunniest month in Delta, with sunshine about 67% of daylight hours. January is the cloudiest, at 17%. Over the year the sun shines about 38% of daylight hours. Delta is sunnier than 65% of Canada.

Humidity peaks in January at 84% and is lowest in July at 67%.

Delta weather records

The hottest temperature on record at the Delta station is 38°C, on June 28, 2021. The coldest is -16°C, on January 13, 2024.

The wettest day on record brought 63 mm of rain, on November 14, 2021.

The best time to visit Delta

The most comfortable time to visit is typically June to September, when daytime highs sit near 23°C.

Winter (December–February) is chilly, with average highs around 7°C and lows near 0°C.

Spring (March–May) is mild, with average highs around 15°C and lows near 4°C.

Summer (June–August) is warm, with average highs around 24°C and lows near 11°C. It can feel humid.

Autumn (September–November) is mild, with average highs around 15°C and lows near 5°C.

Delta climate questions

What is the hottest month in Delta?

July is the warmest month in Delta, with an average high of 24°C.

What is the coldest month in Delta?

February is the coldest month in Delta, with an average low of -1°C.

What is the record high temperature in Delta?

The record high at the Delta station is 38°C, set on June 28, 2021. The record low is -16°C, on January 13, 2024.

What is the sunniest month in Delta?

July is the sunniest month in Delta, with sunshine about 67% of daylight hours. January is the cloudiest.

What is the best time to visit Delta?

The most comfortable time to visit is typically June to September, when daytime highs sit near 23°C.