July is one of the warmer months of the year in St. John's, with average highs near 15.6°C and lows around 11.5°C (mean 13.6°C). It is one of the drier months, averaging 91 mm of rainfall and 89% relative humidity across the period.
July is one of the warmer months of the year in St. John's. Across 45 years of records, the warmest July in St. John's was 2014 — when the month averaged 16.2°C — while the coldest was 1993 at 10.2°C. Typical July days reach 15.6°C with nights near 11.5°C. The long-term trend is warming, about 0.4°C per decade.
July is one of the drier months in St. John's, averaging 91 mm of rainfall. The wettest July on record was 1992 with 152 mm, while the driest was 1984 at 43 mm.
Relative humidity in St. John's during July averages 89%. The most humid July was 2023 at 93%, and the least humid was 2009 at 87%.
July receives about 5 kWh/m²/day of solar energy in St. John's. The sunniest July was 2022 at 5.7 kWh/m²/day, and the cloudiest was 1988 at 4.2.
Average wind speed in St. John's during July is 3.6 m/s. The windiest Julys were 2011 and 2015 at 4.1 m/s, while the calmest were 2019 and 2023 at 2.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 13.4°C | 12.5°C | 14.0°C | 13.6°C | 14.7°C | +1.3°C |
| Avg High | 15.5°C | 14.5°C | 16.0°C | 15.6°C | 16.6°C | +1.1°C |
| Avg Low | 11.3°C | 10.4°C | 11.9°C | 11.6°C | 12.9°C | +1.6°C |
| Avg Rain | 85 mm | 96 mm | 92 mm | 93 mm | 89 mm | +5 mm |
July temperatures in St. John's have risen by about 1.5°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 4.4°C (2018) to a record high of 23.9°C (2023).
Rainfall in July is one of the drier months, averaging 91 mm, with a wettest year of 152 mm.
One of the best times to visit St. John's
July is one of the best times to visit St. John's. Expect days averaging 15.6°C and nights around 11.5°C (mean 13.6°C) — warmer than St. John's's yearly average — with higher rainfall (91 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 16.8°C | 14.7°C | 12.6°C | 20.5°C | 10.5°C | 87 mm | 88% | 3.3 m/s | 5.2 |
| 2024 | 18.0°C | 16.1°C | 14.2°C | 22.4°C | 10.2°C | 109 mm | 90% | 3.1 m/s | 5.1 |
| 2023 | 17.5°C | 15.7°C | 13.9°C | 23.9°C | 9.1°C | 59 mm | 93% | 2.9 m/s | 5 |
| 2022 | 17.6°C | 15.6°C | 13.6°C | 22.9°C | 11.1°C | 67 mm | 88% | 3.7 m/s | 5.7 |
| 2021 | 15.2°C | 13.3°C | 11.4°C | 19.4°C | 8.3°C | 98 mm | 89% | 3.9 m/s | 4.7 |
| 2020 | 14.5°C | 13.0°C | 11.4°C | 19.5°C | 8.3°C | 114 mm | 89% | 3.6 m/s | 4.6 |
| 2019 | 14.3°C | 12.3°C | 10.3°C | 20.2°C | 7.8°C | 125 mm | 90% | 2.9 m/s | 4.7 |
| 2018 | 15.3°C | 12.9°C | 10.5°C | 21.0°C | 4.4°C | 74 mm | 91% | 3.8 m/s | 5 |
| 2017 | 15.6°C | 13.5°C | 11.4°C | 20.1°C | 6.5°C | 97 mm | 88% | 3.4 m/s | 5.6 |
| 2016 | 15.1°C | 13.3°C | 11.6°C | 21.2°C | 7.4°C | 77 mm | 91% | 3.9 m/s | 4.7 |
| 2015 | 13.0°C | 11.5°C | 9.9°C | 18.8°C | 7.9°C | 109 mm | 90% | 4.1 m/s | 4.4 |
| 2014 🔥 | 18.2°C | 16.2°C | 14.1°C | 22.1°C | 9.8°C | 56 mm | 89% | 4 m/s | 5.4 |
| 2013 | 17.1°C | 14.8°C | 12.4°C | 22.6°C | 8.6°C | 75 mm | 89% | 3.6 m/s | 5.5 |
| 2012 | 16.4°C | 14.6°C | 12.9°C | 19.5°C | 11.0°C | 55 mm | 89% | 3.7 m/s | 5.3 |
| 2011 | 14.8°C | 12.8°C | 10.8°C | 18.6°C | 8.1°C | 150 mm | 91% | 4.1 m/s | 4.6 |
| 2010 | 16.4°C | 14.3°C | 12.1°C | 19.9°C | 6.7°C | 107 mm | 91% | 4 m/s | 5 |
| 2009 | 16.1°C | 14.1°C | 12.1°C | 20.5°C | 7.6°C | 87 mm | 87% | 3.4 m/s | 5.1 |
| 2008 | 17.5°C | 15.5°C | 13.4°C | 21.4°C | 9.8°C | 92 mm | 91% | 3.3 m/s | 5 |
| 2007 | 16.0°C | 14.1°C | 12.1°C | 20.1°C | 7.7°C | 118 mm | 90% | 3.9 m/s | 4.6 |
| 2006 | 17.1°C | 15.2°C | 13.3°C | 21.1°C | 10.9°C | 95 mm | 89% | 4 m/s | 4.9 |
| 2005 | 15.9°C | 13.9°C | 12.0°C | 20.4°C | 6.4°C | 89 mm | 91% | 3.3 m/s | 4.8 |
| 2004 | 15.8°C | 13.7°C | 11.5°C | 21.2°C | 8.3°C | 61 mm | 90% | 3.2 m/s | 4.6 |
| 2003 | 15.8°C | 13.7°C | 11.6°C | 20.3°C | 5.2°C | 105 mm | 90% | 3.5 m/s | 4.8 |
| 2002 | 14.9°C | 12.7°C | 10.4°C | 18.4°C | 8.4°C | 76 mm | 89% | 3.5 m/s | 5.6 |
| 2001 | 15.0°C | 12.8°C | 10.7°C | 20.0°C | 6.9°C | 96 mm | 88% | 3.5 m/s | 5.2 |
| 2000 | 15.5°C | 13.9°C | 12.3°C | 19.5°C | 10.0°C | 97 mm | 90% | 3.7 m/s | 4.6 |
| 1999 | 16.6°C | 14.5°C | 12.5°C | 19.8°C | 7.9°C | 69 mm | 88% | 3.4 m/s | 5 |
| 1998 | 15.9°C | 14.0°C | 12.0°C | 21.2°C | 9.3°C | 132 mm | 90% | 3.4 m/s | 4.9 |
| 1997 | 14.3°C | 12.2°C | 10.1°C | 17.9°C | 7.1°C | 55 mm | 88% | 3.8 m/s | 5.6 |
| 1996 | 14.9°C | 13.0°C | 11.0°C | 18.3°C | 8.4°C | 94 mm | 90% | 4 m/s | 4.9 |
| 1995 | 14.4°C | 12.3°C | 10.1°C | 19.5°C | 6.9°C | 98 mm | 89% | 3.8 m/s | 4.7 |
| 1994 | 16.2°C | 14.1°C | 11.9°C | 20.2°C | 8.1°C | 64 mm | 88% | 3.7 m/s | 5.3 |
| 1993 ❄️ | 11.8°C | 10.2°C | 8.6°C | 16.4°C | 5.2°C | 127 mm | 92% | 3.5 m/s | 4.4 |
| 1992 🌧️ | 13.0°C | 11.0°C | 8.9°C | 18.5°C | 4.7°C | 152 mm | 89% | 3.4 m/s | 5 |
| 1991 | 14.0°C | 11.5°C | 9.0°C | 19.7°C | 6.0°C | 82 mm | 88% | 3.2 m/s | 5 |
| 1990 | 14.2°C | 11.9°C | 9.7°C | 21.1°C | 6.2°C | 87 mm | 88% | 3.7 m/s | 5.3 |
| 1989 | 15.3°C | 13.3°C | 11.3°C | 19.0°C | 7.9°C | 147 mm | 88% | 3.7 m/s | 4.6 |
| 1988 | 16.1°C | 13.7°C | 11.3°C | 20.5°C | 8.7°C | 85 mm | 89% | 3.1 m/s | 4.2 |
| 1987 | 15.6°C | 13.3°C | 11.0°C | 19.4°C | 7.0°C | 59 mm | 88% | 3.4 m/s | 5.3 |
| 1986 | 13.6°C | 11.8°C | 10.1°C | 18.6°C | 7.0°C | 83 mm | 89% | 4 m/s | 5.1 |
| 1985 | 15.8°C | 13.5°C | 11.2°C | 18.0°C | 6.9°C | 86 mm | 90% | 3.8 m/s | 5.4 |
| 1984 | 17.0°C | 14.7°C | 12.4°C | 20.0°C | 6.2°C | 43 mm | 89% | 3.7 m/s | 5.2 |
| 1983 | 16.3°C | 14.4°C | 12.5°C | 18.6°C | 7.8°C | 88 mm | 90% | 4 m/s | — |
| 1982 | 14.5°C | 12.5°C | 10.4°C | 20.4°C | 6.8°C | 69 mm | 90% | 3.9 m/s | — |
| 1981 | 15.0°C | 13.1°C | 11.2°C | 20.3°C | 8.2°C | 102 mm | 88% | 3.8 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 15.6°C with lows near 11.5°C (mean 13.6°C), based on 45 years of NASA POWER data.
July averages 91 mm of rainfall in St. John's, one of the drier months. The wettest on record was 152 mm in 1992.
The hottest July reached 23.9°C in 2023. The coldest dipped to 4.4°C in 2018.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 1.5°C. Daytime highs moved from 15.7°C to 17°C and overnight lows from 11.5°C to 13.1°C over the same span.
July is one of the warmer months of the year in St. John's and one of the drier months, so plan for around 15.6°C daytime highs and 11.5°C at night.
Not quite — July is the 11th coolest month in St. John's, averaging 13.6°C.
For July in St. John's, pack light layers you can adjust through the day, with typical highs of 15.6°C and lows of 11.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 89% — quite humid.
Average wind speed in July is 3.6 m/s. The windiest July on record averaged 4.1 m/s (2011).
The wettest July on record was 1992 with 152 mm. On average, July sees 91 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 July, 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 July specifically, along with year-by-year records and how the month has changed over the decades.
