Comox A is a weather station located 26 m above sea level, 5 km from Comox. Its records go back to 1936: 83 years of temperature are available up to 2020, along with rainfall and a comparison with two reference normals. Closed series: the records of this station end in 2020. Over 1991–2020 the annual mean temperature there is 10.3 °C, noticeably higher than over 1961–1990 (9.6 °C): a difference of 0.7 °C. The warmest year of the series is 1941 (11.4 °C) and the coldest 1950 (8.0 °C). The last complete year, 2020, ranks 10 out of 83, from warmest to coldest. Over 1961–2020, the annual mean temperature changes by +0.22 °C per decade. The station ranks 155 out of 240 stations, from the fastest rise to the slowest.
Annual mean temperature since 1936
The first ten years of the series (1936–1947) average 9.9 °C; the last ten (2011–2020) average 10.6 °C, a difference of +0.7 °C. Of the ten warmest years in the series, 6 fall after 1999. The warmest is 1941 (11.4 °C). The ten-year running mean peaks at 10.6 °C (2020) and bottoms out at 8.8 °C (1955).
Annual rainfall since 1936
On average 1121 mm of rain falls per year over the 80 documented years. The wettest year, 2016, received 1743 mm; the driest, 1985, only 714 mm, which is 2.4 times less. The 1991–2020 normal (1151 mm per year) is 20 mm (1.7 %) below the 1961–1990 one (1171 mm). Over 1991–2020, November is on average the wettest month (185 mm) and July the driest (30 mm). Between 1998 and 2017, 11 years out of 20 exceeded the series average.
Monthly normals: 1961–1990 against 1991–2020
The table compares, month by month, the mean temperature and the rainfall total of two thirty-year reference periods. The difference column shows what the recent period changes compared with the earlier one.
| Month | Temp. 1961–1990 | Temp. 1991–2020 | Difference | Rain 1961–1990 | Rain 1991–2020 | Difference |
|---|---|---|---|---|---|---|
| January | 2.9 °C | 4.0 °C | +1.1 °C | 143 mm | 145 mm | +2 mm |
| February | 4.3 °C | 4.3 °C | 0.0 °C | 107 mm | 105 mm | −2 mm |
| March | 5.7 °C | 6.1 °C | +0.4 °C | 104 mm | 112 mm | +8 mm |
| April | 8.3 °C | 9.0 °C | +0.7 °C | 66 mm | 69 mm | +3 mm |
| May | 11.8 °C | 12.9 °C | +1.1 °C | 67 mm | 63 mm | −4 mm |
| June | 15.2 °C | 15.8 °C | +0.6 °C | 57 mm | 52 mm | −5 mm |
| July | 17.4 °C | 18.5 °C | +1.1 °C | 48 mm | 30 mm | −18 mm |
| August | 17.4 °C | 18.3 °C | +0.9 °C | 52 mm | 41 mm | −11 mm |
| September | 13.9 °C | 14.8 °C | +0.9 °C | 65 mm | 54 mm | −11 mm |
| October | 9.4 °C | 9.8 °C | +0.4 °C | 133 mm | 129 mm | −4 mm |
| November | 5.6 °C | 6.1 °C | +0.5 °C | 165 mm | 185 mm | +20 mm |
| December | 3.5 °C | 3.9 °C | +0.4 °C | 164 mm | 166 mm | +2 mm |
The largest temperature change is in July (+1.1 °C) and the smallest in February (0.0 °C); over the year the mean difference is +0.7 °C, and 11 months out of twelve are warmer than before. For rainfall, the largest difference is in November (+20 mm) and the smallest in July (−18 mm).
Records at Comox A
- Warmest year: 11.4 °C, in 1941
- Coldest year: 8.0 °C, in 1950
- Driest year: 714 mm, in 1985
- Wettest year: 1743 mm, in 2016
- Warmest month: 21.2 °C, in July 1958
- Coldest month: −6.2 °C, in January 1950
- Wettest month: 406 mm, in November 2016
- Hottest day: 38.0 °C, on 27 June 2021
- Coldest day: −21.1 °C, on 31 January 1950
- Heaviest rain in one day: 113.0 mm, on 22 December 1957
3.4 °C separate the warmest year of the series from the coldest. Between the hottest and the coldest day on record, the range reaches 59.1 °C.
Temperature trend over 1961–2020
The regression line of annual mean temperature changes by +0.22 °C per decade between 1961 and 2020, about +1.3 °C over the whole period. That is slower than the median of the 240 stations (+0.25 °C per decade), by 0.03 °C per decade: the station ranks 155 out of 240.
Data source and licence
Data source: Environment and Climate Change Canada (dataset “AHCCD (ahccd-monthly) + climate-daily”), licence Open Government Licence – Canada. Last updated: 29 October 2026.
The data for Comox A are shown as the source publishes them; this site does not correct them. A year is kept only if at least eleven months of measurements are available, and a normal is computed only with at least twenty years of data out of its thirty. Temperatures are rounded to 0.1 °C and rainfall to the millimetre. The station is one of 240 stations in Canada: the overview page lets you compare them.
Frequently asked questions
What is the annual mean temperature at Comox A?
Over 1991–2020, the annual mean temperature at Comox A is 10.3 °C. It was 9.6 °C over 1961–1990, a difference of +0.7 °C.
What is the warmest year ever measured at Comox A?
Since records began in 1936, the warmest year at Comox A is 1941, at 11.4 °C on average. The coldest is 1950 (8.0 °C).
Is the climate at Comox A getting warmer?
Yes: at Comox A, the annual mean temperature rises by 0.22 °C per decade between 1961 and 2020, +1.3 °C in total. 6 of the 10 warmest years in the series fall after 1999.
Towns near this station
Neighbouring stations