Climate Chart of Haida Gwaii, Canada

Climate overview

Temperature

Monthly mean temperatures are lowest in February, at 2.9 °C, and highest in August, at 14.4 °C. These figures describe monthly averages, not the daytime maximum or the conditions visitors will encounter on any particular day. The unweighted mean across the calendar-month means is 7.9 °C. It provides a compact overview, but does not represent a day-weighted annual average or show how temperatures fluctuate within each month.

Rain

Mean daily rainfall reaches its highest monthly mean in November, at 9.71 mm/day, and its lowest in May, at 3.19 mm/day. The figures are daily averages, not monthly rainfall totals, and the lower mean does not guarantee rain-free days. The unweighted mean of the monthly mean daily rainfall figures is 6.37 mm/day. This summarises the monthly averages without indicating how often rain falls or how rainfall is distributed across individual days.

Sunshine

Mean daily sunshine is highest in July, at 8.72 hours/day, and lowest in January, at 2.17 hours/day. These are averages of sunshine duration, not measures of day length, and actual conditions can differ from the monthly mean. Across the calendar months, the unweighted mean daily sunshine duration is 5.86 hours/day. It offers a broad reference for the year rather than a forecast for a particular date.

Snow

The highest monthly mean daily snowfall is recorded in March, at 9.92 mm/day. This is a daily mean, not a monthly total, and it does not establish the number of snowy days, snow depth or how long snow remains on the ground. The unweighted mean across the monthly mean daily snowfall figures is 3.77 mm/day. This summary does not by itself describe snowfall on any particular travel day.