June is one of the warmer months of the year in Dover, with average highs near 27.4°C and lows around 17.3°C (mean 22.4°C). It is about average for rainfall, averaging 96 mm of rainfall and 75% relative humidity across the period.
June is one of the warmer months of the year in Dover. Across 45 years of records, the warmest June in Dover was 2010 — when the month averaged 25.2°C — while the coldest was 1992 at 20°C. Typical June days reach 27.4°C with nights near 17.3°C. The long-term trend is warming, about 0.5°C per decade.
June is about average for rainfall in Dover, averaging 96 mm of rainfall. The wettest June on record was 2013 with 234 mm, while the driest was 1988 at 22 mm.
Relative humidity in Dover during June averages 75%. The most humid June was 2003 at 84%, and the least humid was 1986 at 62%.
June receives about 6.2 kWh/m²/day of solar energy in Dover. The sunniest June was 2024 at 7 kWh/m²/day, and the cloudiest was 2009 at 5.1.
Average wind speed in Dover during June is 2.6 m/s. The windiest Junes were 1986, 1999 and 2015 at 2.9 m/s, while the calmest was 1983 at 2.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 21.7°C | 21.7°C | 22.3°C | 23.0°C | 23.4°C | +1.7°C |
| Avg High | 26.8°C | 26.9°C | 27.1°C | 27.8°C | 28.7°C | +1.9°C |
| Avg Low | 16.6°C | 16.5°C | 17.5°C | 18.2°C | 18.1°C | +1.5°C |
| Avg Rain | 93 mm | 80 mm | 118 mm | 108 mm | 70 mm | -23 mm |
June temperatures in Dover have risen by about 2.2°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 7.8°C (1984) to a record high of 37.6°C (2025).
Rainfall in June is about average for rainfall, averaging 96 mm, with a wettest year of 234 mm.
One of the best times to visit Dover
June is one of the best times to visit Dover. Expect days averaging 27.4°C and nights around 17.3°C (mean 22.4°C) — warmer than Dover's yearly average — with higher rainfall (96 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 | 29.6°C | 24.3°C | 18.9°C | 37.6°C | 9.4°C | 60 mm | 76% | 2.3 m/s | 5.7 |
| 2024 | 30.1°C | 24.6°C | 19.0°C | 36.3°C | 12.1°C | 69 mm | 70% | 2.7 m/s | 7 |
| 2023 | 26.6°C | 21.3°C | 16.1°C | 30.7°C | 11.2°C | 82 mm | 74% | 2.8 m/s | 5.9 |
| 2022 | 28.9°C | 23.3°C | 17.8°C | 34.4°C | 13.3°C | 78 mm | 69% | 2.6 m/s | 6.5 |
| 2021 | 28.5°C | 23.4°C | 18.4°C | 35.3°C | 11.6°C | 74 mm | 77% | 2.7 m/s | 6.4 |
| 2020 | 28.8°C | 23.5°C | 18.3°C | 33.9°C | 9.9°C | 57 mm | 70% | 2.8 m/s | 6.8 |
| 2019 | 27.2°C | 22.7°C | 18.3°C | 32.8°C | 10.1°C | 133 mm | 78% | 2.8 m/s | 6.5 |
| 2018 | 26.5°C | 22.1°C | 17.7°C | 32.5°C | 11.6°C | 99 mm | 82% | 2.5 m/s | 6 |
| 2017 | 28.0°C | 22.9°C | 17.9°C | 32.7°C | 11.0°C | 61 mm | 72% | 2.8 m/s | 6.6 |
| 2016 | 26.7°C | 21.8°C | 16.8°C | 30.8°C | 10.4°C | 85 mm | 76% | 2.6 m/s | 6.6 |
| 2015 | 27.2°C | 23.1°C | 19.0°C | 32.5°C | 13.4°C | 203 mm | 82% | 2.9 m/s | 5.8 |
| 2014 | 26.8°C | 22.2°C | 17.7°C | 30.4°C | 10.8°C | 72 mm | 79% | 2.3 m/s | 6.5 |
| 2013 🌧️ | 26.8°C | 22.5°C | 18.2°C | 30.7°C | 12.8°C | 234 mm | 83% | 2.7 m/s | 6 |
| 2012 | 28.8°C | 23.1°C | 17.5°C | 36.5°C | 11.9°C | 80 mm | 67% | 2.6 m/s | 6.6 |
| 2011 | 29.3°C | 24.1°C | 18.8°C | 33.9°C | 11.8°C | 62 mm | 70% | 2.2 m/s | 6.2 |
| 2010 🔥 | 30.5°C | 25.2°C | 19.8°C | 35.9°C | 13.7°C | 53 mm | 69% | 2.6 m/s | 6.5 |
| 2009 | 25.7°C | 21.5°C | 17.3°C | 28.8°C | 10.2°C | 140 mm | 83% | 2.4 m/s | 5.1 |
| 2008 | 28.3°C | 23.4°C | 18.5°C | 33.3°C | 13.5°C | 93 mm | 78% | 2.3 m/s | 6.6 |
| 2007 | 27.6°C | 22.7°C | 17.7°C | 34.1°C | 12.8°C | 74 mm | 74% | 2.5 m/s | 6.2 |
| 2006 | 27.2°C | 22.5°C | 17.9°C | 33.0°C | 10.7°C | 201 mm | 74% | 2.7 m/s | 5.7 |
| 2005 | 27.3°C | 22.5°C | 17.7°C | 31.7°C | 12.7°C | 78 mm | 80% | 2.5 m/s | 6.1 |
| 2004 | 26.3°C | 21.7°C | 17.1°C | 30.5°C | 12.5°C | 104 mm | 79% | 2.3 m/s | 5.9 |
| 2003 | 25.1°C | 20.6°C | 16.1°C | 31.9°C | 8.5°C | 165 mm | 84% | 2.3 m/s | 5.2 |
| 2002 | 29.4°C | 23.4°C | 17.5°C | 35.3°C | 11.0°C | 68 mm | 67% | 2.6 m/s | 6.4 |
| 2001 | 27.4°C | 22.5°C | 17.6°C | 33.1°C | 9.8°C | 131 mm | 76% | 2.3 m/s | 6.5 |
| 2000 | 26.8°C | 22.0°C | 17.1°C | 31.4°C | 11.0°C | 122 mm | 79% | 2.7 m/s | 5.5 |
| 1999 | 28.2°C | 22.5°C | 16.8°C | 34.9°C | 12.8°C | 72 mm | 69% | 2.9 m/s | 6 |
| 1998 | 25.7°C | 21.3°C | 16.8°C | 31.9°C | 10.6°C | 110 mm | 80% | 2.7 m/s | 5.5 |
| 1997 | 26.6°C | 21.1°C | 15.6°C | 34.7°C | 8.3°C | 66 mm | 72% | 2.7 m/s | 6.1 |
| 1996 | 26.3°C | 21.6°C | 17.0°C | 30.2°C | 8.5°C | 151 mm | 81% | 2.5 m/s | 5.9 |
| 1995 | 27.1°C | 22.0°C | 16.8°C | 33.0°C | 12.5°C | 72 mm | 74% | 2.7 m/s | 5.6 |
| 1994 | 28.7°C | 23.3°C | 17.9°C | 33.8°C | 9.1°C | 68 mm | 73% | 2.7 m/s | 5.9 |
| 1993 | 26.5°C | 21.3°C | 16.2°C | 31.7°C | 8.0°C | 57 mm | 76% | 2.4 m/s | 6.4 |
| 1992 ❄️ | 25.3°C | 20.0°C | 14.6°C | 30.3°C | 8.9°C | 74 mm | 75% | 2.4 m/s | 6.6 |
| 1991 | 28.3°C | 22.7°C | 17.1°C | 35.1°C | 11.8°C | 66 mm | 68% | 2.3 m/s | 6.2 |
| 1990 | 25.9°C | 21.0°C | 16.1°C | 30.9°C | 9.2°C | 65 mm | 79% | 2.7 m/s | 6.2 |
| 1989 | 26.3°C | 22.4°C | 18.5°C | 29.5°C | 13.3°C | 195 mm | 83% | 2.3 m/s | 5.5 |
| 1988 | 27.0°C | 21.1°C | 15.1°C | 35.5°C | 8.4°C | 22 mm | 67% | 2.8 m/s | 6.9 |
| 1987 | 27.5°C | 22.3°C | 17.2°C | 32.5°C | 10.2°C | 63 mm | 77% | 2.5 m/s | 6.4 |
| 1986 | 29.4°C | 23.1°C | 16.8°C | 33.3°C | 8.6°C | 54 mm | 62% | 2.9 m/s | 6.8 |
| 1985 | 26.5°C | 21.1°C | 15.7°C | 31.2°C | 11.2°C | 71 mm | 69% | 2.7 m/s | 5.8 |
| 1984 | 26.4°C | 21.7°C | 17.0°C | 30.8°C | 7.8°C | 84 mm | 81% | 2.4 m/s | 5.7 |
| 1983 | 25.7°C | 20.7°C | 15.8°C | 30.7°C | 9.8°C | 115 mm | 80% | 2.1 m/s | — |
| 1982 | 24.8°C | 20.2°C | 15.6°C | 29.4°C | 11.3°C | 129 mm | 80% | 2.6 m/s | — |
| 1981 | 27.8°C | 22.5°C | 17.3°C | 33.8°C | 12.5°C | 104 mm | 74% | 2.6 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 27.4°C with lows near 17.3°C (mean 22.4°C), based on 45 years of NASA POWER data.
June averages 96 mm of rainfall in Dover, about average for rainfall. The wettest on record was 234 mm in 2013.
The hottest June reached 37.6°C in 2025. The coldest dipped to 7.8°C in 1984.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 2.2°C. Daytime highs moved from 26.2°C to 28.7°C and overnight lows from 16.3°C to 18°C over the same span.
June is one of the warmer months of the year in Dover and about average for rainfall, so plan for around 27.4°C daytime highs and 17.3°C at night.
Not quite — June is the 10th coolest month in Dover, averaging 22.4°C.
For June in Dover, pack light layers you can adjust through the day, with typical highs of 27.4°C and lows of 17.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 75% — quite humid.
Average wind speed in June is 2.6 m/s. The windiest June on record averaged 2.9 m/s (1986).
The wettest June on record was 2013 with 234 mm. On average, June sees 96 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 Dover 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.
