October is one of the warmer months of the year in St. John's, with average highs near 10.1°C and lows around 6.9°C (mean 8.5°C). It is a relatively wet time of year, averaging 129 mm of rainfall and 86% relative humidity across the period.
October is one of the warmer months of the year in St. John's. Across 45 years of records, the warmest October in St. John's was 2022 — when the month averaged 11.5°C — while the coldest was 1984 at 6.4°C. Typical October days reach 10.1°C with nights near 6.9°C. The long-term trend is warming, about 0.4°C per decade.
October is a relatively wet time of year in St. John's, averaging 129 mm of rainfall. The wettest October on record was 2009 with 227 mm, while the driest was 2022 at 44 mm.
Relative humidity in St. John's during October averages 86%. The most humid October was 2011 at 90%, and the least humid was 1993 at 81%.
October receives about 2.2 kWh/m²/day of solar energy in St. John's. The sunniest October was 2022 at 2.7 kWh/m²/day, and the cloudiest was 1992 at 1.6.
Average wind speed in St. John's during October is 5.2 m/s. The windiest October was 2009 at 6.4 m/s, while the calmest were 2022 and 2023 at 4.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 7.7°C | 8.1°C | 8.8°C | 8.7°C | 9.7°C | +2°C |
| Avg High | 9.5°C | 9.7°C | 10.3°C | 10.3°C | 11.3°C | +1.8°C |
| Avg Low | 6.0°C | 6.4°C | 7.2°C | 7.1°C | 8.2°C | +2.2°C |
| Avg Rain | 119 mm | 146 mm | 147 mm | 118 mm | 101 mm | -18 mm |
October temperatures in St. John's have risen by about 2.2°C between 1981–1985 and 2021–2025.
October has ranged from a record low of -0.8°C (2009) to a record high of 17.6°C (2020).
Rainfall in October is a relatively wet time of year, averaging 129 mm, with a wettest year of 227 mm.
A good time to visit St. John's
October is a good time to visit St. John's, with days averaging 10.1°C and nights around 6.9°C (mean 8.5°C, warmer than St. John's's yearly average) and higher rainfall. August and July are marginally more temperate, but October still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 10.3°C | 8.8°C | 7.2°C | 15.9°C | 4.9°C | 112 mm | 89% | 4.7 m/s | 2.4 |
| 2024 | 11.6°C | 10.0°C | 8.4°C | 15.9°C | 2.6°C | 121 mm | 85% | 5.7 m/s | 2.2 |
| 2023 | 11.0°C | 9.6°C | 8.2°C | 14.3°C | 2.7°C | 84 mm | 88% | 4.1 m/s | 2.1 |
| 2022 🔥 | 13.2°C | 11.5°C | 9.8°C | 15.8°C | 6.2°C | 44 mm | 86% | 4.1 m/s | 2.7 |
| 2021 | 10.0°C | 8.7°C | 7.5°C | 15.8°C | 4.6°C | 109 mm | 88% | 5.7 m/s | 2.1 |
| 2020 | 11.4°C | 9.6°C | 7.8°C | 17.6°C | 2.3°C | 138 mm | 85% | 4.9 m/s | 2.2 |
| 2019 | 9.1°C | 7.8°C | 6.6°C | 13.1°C | 4.7°C | 82 mm | 87% | 4.9 m/s | 2.2 |
| 2018 | 10.0°C | 8.2°C | 6.4°C | 15.9°C | 3.6°C | 135 mm | 83% | 5.1 m/s | 2.1 |
| 2017 | 10.3°C | 8.5°C | 6.8°C | 15.9°C | 2.4°C | 47 mm | 88% | 4.5 m/s | 2.2 |
| 2016 | 10.3°C | 8.3°C | 6.4°C | 14.6°C | 2.2°C | 112 mm | 87% | 5.2 m/s | 2.2 |
| 2015 | 10.6°C | 8.7°C | 6.8°C | 15.9°C | 1.9°C | 95 mm | 84% | 5.3 m/s | 2.1 |
| 2014 | 11.2°C | 9.8°C | 8.3°C | 15.2°C | 6.1°C | 144 mm | 88% | 4.9 m/s | 2.1 |
| 2013 | 10.0°C | 8.4°C | 6.9°C | 17.4°C | 2.5°C | 117 mm | 85% | 5.2 m/s | 2.3 |
| 2012 | 11.3°C | 9.9°C | 8.5°C | 15.5°C | 4.6°C | 119 mm | 88% | 5.3 m/s | 2 |
| 2011 | 10.3°C | 8.8°C | 7.3°C | 16.6°C | 2.1°C | 202 mm | 90% | 5.2 m/s | 1.7 |
| 2010 | 10.2°C | 8.7°C | 7.3°C | 15.8°C | 4.3°C | 132 mm | 88% | 5.2 m/s | 2.2 |
| 2009 🌧️ | 8.1°C | 6.7°C | 5.4°C | 16.7°C | -0.8°C | 227 mm | 87% | 6.4 m/s | 1.8 |
| 2008 | 10.6°C | 9.2°C | 7.8°C | 15.8°C | 4.1°C | 126 mm | 86% | 4.8 m/s | 2.1 |
| 2007 | 9.4°C | 7.7°C | 6.0°C | 14.5°C | 2.1°C | 100 mm | 87% | 4.7 m/s | 2.2 |
| 2006 | 11.1°C | 9.7°C | 8.3°C | 16.5°C | 4.3°C | 134 mm | 86% | 5.3 m/s | 2.1 |
| 2005 | 9.9°C | 8.5°C | 7.0°C | 15.2°C | 4.4°C | 155 mm | 87% | 5.6 m/s | 2 |
| 2004 | 10.0°C | 8.9°C | 7.7°C | 14.3°C | 2.0°C | 198 mm | 89% | 5.2 m/s | 1.9 |
| 2003 | 13.0°C | 11.3°C | 9.7°C | 16.6°C | 5.3°C | 159 mm | 87% | 5.8 m/s | 2 |
| 2002 | 8.4°C | 6.7°C | 5.0°C | 13.4°C | 1.4°C | 97 mm | 84% | 5.4 m/s | 2.4 |
| 2001 | 11.5°C | 9.7°C | 8.0°C | 15.3°C | 1.3°C | 96 mm | 87% | 4.4 m/s | 2.3 |
| 2000 | 11.2°C | 9.2°C | 7.3°C | 16.1°C | 2.9°C | 182 mm | 85% | 5.8 m/s | 1.9 |
| 1999 | 10.0°C | 7.8°C | 5.6°C | 14.2°C | 0.5°C | 180 mm | 83% | 5.7 m/s | 2.1 |
| 1998 | 9.3°C | 7.9°C | 6.6°C | 14.0°C | 2.0°C | 166 mm | 85% | 5.5 m/s | 2.5 |
| 1997 | 9.1°C | 7.8°C | 6.6°C | 15.1°C | 3.6°C | 138 mm | 87% | 5.6 m/s | 1.9 |
| 1996 | 8.5°C | 7.1°C | 5.7°C | 12.6°C | 2.6°C | 91 mm | 88% | 5.3 m/s | 2.1 |
| 1995 | 9.9°C | 8.4°C | 6.8°C | 14.6°C | 5.0°C | 103 mm | 87% | 4.5 m/s | 2 |
| 1994 | 10.2°C | 8.6°C | 7.0°C | 14.6°C | 3.2°C | 195 mm | 90% | 5.2 m/s | 2 |
| 1993 | 9.6°C | 7.7°C | 5.8°C | 15.9°C | 0.7°C | 130 mm | 81% | 5.4 m/s | 2.5 |
| 1992 | 8.8°C | 7.3°C | 5.7°C | 13.9°C | 3.3°C | 151 mm | 88% | 5.9 m/s | 1.6 |
| 1991 | 9.9°C | 8.3°C | 6.8°C | 14.5°C | 2.6°C | 130 mm | 86% | 5 m/s | 2.2 |
| 1990 | 11.6°C | 9.6°C | 7.5°C | 16.3°C | 2.7°C | 181 mm | 85% | 5.1 m/s | 2.1 |
| 1989 | 9.2°C | 7.4°C | 5.5°C | 15.2°C | 1.4°C | 99 mm | 83% | 5 m/s | 2.4 |
| 1988 | 10.4°C | 8.8°C | 7.2°C | 15.5°C | 4.0°C | 84 mm | 86% | 4.6 m/s | 2.2 |
| 1987 | 10.9°C | 9.0°C | 7.2°C | 16.7°C | 4.1°C | 76 mm | 84% | 5 m/s | 2.4 |
| 1986 | 8.4°C | 6.6°C | 4.9°C | 12.5°C | -0.1°C | 135 mm | 84% | 5.5 m/s | 2.3 |
| 1985 | 9.1°C | 7.2°C | 5.3°C | 15.2°C | 0.7°C | 105 mm | 83% | 5.7 m/s | 2.2 |
| 1984 ❄️ | 8.1°C | 6.4°C | 4.7°C | 12.4°C | 0.0°C | 76 mm | 84% | 5.4 m/s | 2.3 |
| 1983 | 10.3°C | 8.6°C | 6.8°C | 15.1°C | 1.9°C | 158 mm | 85% | 5.7 m/s | — |
| 1982 | 8.2°C | 6.5°C | 4.8°C | 12.7°C | 1.0°C | 141 mm | 84% | 5.7 m/s | — |
| 1981 | 10.6°C | 9.0°C | 7.5°C | 14.6°C | 0.3°C | 198 mm | 88% | 4.9 m/s | — |
Actual recorded October data for each year, 1981–2025 — sourced from NASA POWER.
The average high in October is around 10.1°C with lows near 6.9°C (mean 8.5°C), based on 45 years of NASA POWER data.
October averages 129 mm of rainfall in St. John's, a relatively wet time of year. The wettest on record was 227 mm in 2009.
The hottest October reached 17.6°C in 2020. The coldest dipped to -0.8°C in 2009.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average October temperatures have risen by about 2.2°C. Daytime highs moved from 9.3°C to 11.2°C and overnight lows from 5.8°C to 8.2°C over the same span.
October is one of the warmer months of the year in St. John's and a relatively wet time of year, so plan for around 10.1°C daytime highs and 6.9°C at night.
Not quite — October is the 9th coolest month in St. John's, averaging 8.5°C.
For October in St. John's, pack warm layers and a jacket for chilly mornings, with typical highs of 10.1°C and lows of 6.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in October averages 86% — quite humid.
Average wind speed in October is 5.2 m/s. The windiest October on record averaged 6.4 m/s (2009).
The wettest October on record was 2009 with 227 mm. On average, October sees 129 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in St. John's behaves each October, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for October specifically, along with year-by-year records and how the month has changed over the decades.
