June is one of the warmer months of the year in Harlow, with average highs near 19.6°C and lows around 9.8°C (mean 14.7°C). It is about average for rainfall, averaging 60 mm of rainfall and 79% relative humidity across the period.
June is one of the warmer months of the year in Harlow. Across 45 years of records, the warmest June in Harlow was 2025 — when the month averaged 17.6°C — while the coldest was 1991 at 12.5°C. Typical June days reach 19.6°C with nights near 9.8°C. The long-term trend is warming, about 0.5°C per decade.
June is about average for rainfall in Harlow, averaging 60 mm of rainfall. The wettest June on record was 1997 with 129 mm, while the driest was 2018 at 11 mm.
Relative humidity in Harlow during June averages 79%. The most humid June was 2016 at 83%, and the least humid was 2025 at 73%.
June receives about 5.3 kWh/m²/day of solar energy in Harlow. The sunniest Junes were 2006, 2018 and 2025 at 6 kWh/m²/day, and the cloudiest was 1987 at 4.1.
Average wind speed in Harlow during June is 2.9 m/s. The windiest June was 2012 at 4 m/s, while the calmest was 2014 at 2.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 13.9°C | 14.2°C | 15.0°C | 14.9°C | 15.9°C | +2°C |
| Avg High | 18.6°C | 19.0°C | 19.9°C | 19.8°C | 21.1°C | +2.5°C |
| Avg Low | 9.2°C | 9.4°C | 10.2°C | 10.0°C | 10.6°C | +1.4°C |
| Avg Rain | 64 mm | 61 mm | 53 mm | 64 mm | 52 mm | -12 mm |
June temperatures in Harlow have risen by about 2.1°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 2.1°C (1991) to a record high of 30.2°C (2025).
Rainfall in June is about average for rainfall, averaging 60 mm, with a wettest year of 129 mm.
One of the best times to visit Harlow
June is one of the best times to visit Harlow. Expect days averaging 19.6°C and nights around 9.8°C (mean 14.7°C) — warmer than Harlow's yearly average — with moderate rainfall (60 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 🔥 | 23.1°C | 17.6°C | 12.0°C | 30.2°C | 7.4°C | 26 mm | 73% | 3.3 m/s | 6 |
| 2024 | 19.7°C | 14.4°C | 9.1°C | 26.6°C | 5.2°C | 26 mm | 77% | 2.7 m/s | 5.7 |
| 2023 | 22.8°C | 17.0°C | 11.3°C | 27.9°C | 6.5°C | 44 mm | 76% | 2.9 m/s | 5.8 |
| 2022 | 20.7°C | 15.3°C | 10.0°C | 28.3°C | 6.1°C | 54 mm | 75% | 2.8 m/s | 5.9 |
| 2021 | 20.7°C | 15.9°C | 11.1°C | 25.2°C | 6.4°C | 86 mm | 81% | 2.5 m/s | 5 |
| 2020 | 19.7°C | 14.9°C | 10.2°C | 27.2°C | 5.4°C | 77 mm | 79% | 3.1 m/s | 5.6 |
| 2019 | 19.8°C | 15.0°C | 10.3°C | 28.5°C | 7.5°C | 108 mm | 79% | 3.1 m/s | 5.2 |
| 2018 | 21.4°C | 15.8°C | 10.2°C | 25.7°C | 6.2°C | 11 mm | 78% | 2.6 m/s | 6 |
| 2017 | 21.4°C | 16.6°C | 11.7°C | 28.8°C | 7.9°C | 68 mm | 77% | 3.4 m/s | 5.8 |
| 2016 | 19.5°C | 15.1°C | 10.7°C | 23.9°C | 7.6°C | 127 mm | 83% | 2.7 m/s | 4.6 |
| 2015 | 19.5°C | 14.2°C | 9.0°C | 25.2°C | 4.8°C | 26 mm | 75% | 3.1 m/s | 5.6 |
| 2014 | 19.9°C | 15.1°C | 10.3°C | 23.3°C | 7.1°C | 41 mm | 78% | 2.2 m/s | 5.5 |
| 2013 | 18.5°C | 13.9°C | 9.2°C | 23.7°C | 4.6°C | 39 mm | 80% | 3.3 m/s | 4.9 |
| 2012 | 18.1°C | 13.9°C | 9.7°C | 26.2°C | 5.9°C | 125 mm | 79% | 4 m/s | 4.8 |
| 2011 | 19.3°C | 14.3°C | 9.3°C | 28.0°C | 4.9°C | 67 mm | 77% | 3.3 m/s | 5.3 |
| 2010 | 20.6°C | 15.2°C | 9.8°C | 26.0°C | 5.4°C | 32 mm | 77% | 2.4 m/s | 5.6 |
| 2009 | 19.8°C | 14.8°C | 9.8°C | 27.0°C | 4.7°C | 45 mm | 77% | 2.4 m/s | 5.5 |
| 2008 | 19.3°C | 14.6°C | 9.8°C | 24.3°C | 6.1°C | 59 mm | 78% | 3 m/s | 5.3 |
| 2007 | 19.7°C | 15.3°C | 10.9°C | 22.8°C | 6.0°C | 105 mm | 82% | 2.8 m/s | 4.9 |
| 2006 | 21.6°C | 16.0°C | 10.4°C | 27.7°C | 5.0°C | 28 mm | 75% | 2.4 m/s | 6 |
| 2005 | 20.9°C | 15.6°C | 10.4°C | 28.4°C | 3.8°C | 42 mm | 78% | 2.7 m/s | 5.4 |
| 2004 | 19.9°C | 15.3°C | 10.7°C | 27.3°C | 6.7°C | 49 mm | 79% | 3.1 m/s | 5.4 |
| 2003 | 20.9°C | 15.9°C | 10.9°C | 24.5°C | 7.9°C | 85 mm | 81% | 2.6 m/s | 5.6 |
| 2002 | 19.0°C | 14.4°C | 9.8°C | 25.5°C | 6.5°C | 53 mm | 81% | 3 m/s | 5.1 |
| 2001 | 18.4°C | 13.5°C | 8.6°C | 24.9°C | 3.4°C | 30 mm | 79% | 2.8 m/s | 5.6 |
| 2000 | 19.6°C | 15.0°C | 10.4°C | 28.3°C | 7.1°C | 35 mm | 81% | 2.9 m/s | 4.8 |
| 1999 | 18.5°C | 13.8°C | 9.1°C | 23.8°C | 4.4°C | 74 mm | 79% | 2.6 m/s | 5.4 |
| 1998 | 18.4°C | 14.2°C | 10.0°C | 24.4°C | 5.3°C | 119 mm | 83% | 3.4 m/s | 4.5 |
| 1997 🌧️ | 18.2°C | 14.1°C | 9.9°C | 24.0°C | 6.6°C | 129 mm | 80% | 3.3 m/s | 4.6 |
| 1996 | 20.2°C | 14.5°C | 8.8°C | 27.8°C | 4.7°C | 13 mm | 75% | 2.6 m/s | 5.6 |
| 1995 | 18.4°C | 13.4°C | 8.4°C | 27.4°C | 5.1°C | 30 mm | 80% | 3.1 m/s | 4.8 |
| 1994 | 19.5°C | 14.4°C | 9.3°C | 25.3°C | 5.0°C | 27 mm | 78% | 3.3 m/s | 5.6 |
| 1993 | 20.1°C | 15.1°C | 10.1°C | 25.2°C | 6.5°C | 52 mm | 79% | 2.3 m/s | 5.2 |
| 1992 | 21.5°C | 16.0°C | 10.4°C | 28.4°C | 6.6°C | 41 mm | 74% | 2.5 m/s | 5.3 |
| 1991 ❄️ | 16.9°C | 12.5°C | 8.1°C | 22.1°C | 2.1°C | 81 mm | 78% | 3.6 m/s | 4.6 |
| 1990 | 18.6°C | 14.1°C | 9.6°C | 25.3°C | 5.9°C | 49 mm | 77% | 3.2 m/s | 4.8 |
| 1989 | 19.6°C | 14.2°C | 8.9°C | 26.1°C | 2.8°C | 50 mm | 76% | 2.6 m/s | 5.5 |
| 1988 | 18.5°C | 14.0°C | 9.5°C | 22.0°C | 4.1°C | 44 mm | 82% | 2.8 m/s | 4.8 |
| 1987 | 17.4°C | 13.0°C | 8.6°C | 26.6°C | 4.4°C | 85 mm | 82% | 2.8 m/s | 4.1 |
| 1986 | 19.8°C | 14.5°C | 9.2°C | 26.3°C | 4.1°C | 23 mm | 79% | 3.3 m/s | 5.2 |
| 1985 | 17.0°C | 12.7°C | 8.3°C | 22.9°C | 4.4°C | 117 mm | 81% | 3.1 m/s | 4.6 |
| 1984 | 19.2°C | 14.2°C | 9.1°C | 24.4°C | 5.2°C | 46 mm | 79% | 2.8 m/s | 5.2 |
| 1983 | 19.0°C | 14.1°C | 9.2°C | 23.1°C | 5.8°C | 45 mm | 81% | 3 m/s | — |
| 1982 | 19.5°C | 15.3°C | 11.1°C | 25.3°C | 7.4°C | 126 mm | 83% | 2.5 m/s | — |
| 1981 | 17.6°C | 13.1°C | 8.6°C | 24.4°C | 6.3°C | 42 mm | 80% | 3.6 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 19.6°C with lows near 9.8°C (mean 14.7°C), based on 45 years of NASA POWER data.
June averages 60 mm of rainfall in Harlow, about average for rainfall. The wettest on record was 129 mm in 1997.
The hottest June reached 30.2°C in 2025. The coldest dipped to 2.1°C in 1991.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 2.1°C. Daytime highs moved from 18.5°C to 21.4°C and overnight lows from 9.3°C to 10.7°C over the same span.
June is one of the warmer months of the year in Harlow and about average for rainfall, so plan for around 19.6°C daytime highs and 9.8°C at night.
Not quite — June is the 10th coolest month in Harlow, averaging 14.7°C.
For June in Harlow, pack light layers you can adjust through the day, with typical highs of 19.6°C and lows of 9.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 79% — quite humid.
Average wind speed in June is 2.9 m/s. The windiest June on record averaged 4 m/s (2012).
The wettest June on record was 1997 with 129 mm. On average, June sees 60 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 Harlow behaves each June, 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 June specifically, along with year-by-year records and how the month has changed over the decades.
