June is one of the warmer months of the year in Seaford, with average highs near 18.5°C and lows around 10.8°C (mean 14.7°C). It is one of the drier months, averaging 54 mm of rainfall and 81% relative humidity across the period.
June is one of the warmer months of the year in Seaford. Across 45 years of records, the warmest June in Seaford was 2025 — when the month averaged 16.9°C — while the coldest was 1991 at 12.5°C. Typical June days reach 18.5°C with nights near 10.8°C. The long-term trend is warming, about 0.5°C per decade.
June is one of the drier months in Seaford, averaging 54 mm of rainfall. The wettest Junes on record were 1997 and 2012 with 127 mm, while the driest was 2018 at 4 mm.
Relative humidity in Seaford during June averages 81%. The most humid June was 1998 at 86%, and the least humid were 1989 and 1992 at 77%.
June receives about 5.9 kWh/m²/day of solar energy in Seaford. The sunniest Junes were 2017, 2022 and 2023 at 6.5 kWh/m²/day, and the cloudiest was 2016 at 5.
Average wind speed in Seaford during June is 3.3 m/s. The windiest June was 2012 at 4.4 m/s, while the calmest was 2006 at 2.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 14.0°C | 14.1°C | 15.0°C | 14.9°C | 15.8°C | +1.8°C |
| Avg High | 17.8°C | 18.0°C | 18.8°C | 18.7°C | 19.8°C | +2°C |
| Avg Low | 10.2°C | 10.3°C | 11.1°C | 11.1°C | 11.8°C | +1.6°C |
| Avg Rain | 49 mm | 62 mm | 42 mm | 59 mm | 56 mm | +6 mm |
June temperatures in Seaford have risen by about 1.9°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 3.1°C (1991) to a record high of 26.9°C (2025).
Rainfall in June is one of the drier months, averaging 54 mm, with a wettest year of 127 mm.
One of the best times to visit Seaford
June is one of the best times to visit Seaford. Expect days averaging 18.5°C and nights around 10.8°C (mean 14.7°C) — warmer than Seaford's yearly average — with moderate rainfall (54 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 🔥 | 20.9°C | 16.9°C | 12.9°C | 26.9°C | 9.1°C | 31 mm | 80% | 3.6 m/s | 6.3 |
| 2024 | 19.0°C | 14.8°C | 10.7°C | 25.9°C | 7.3°C | 20 mm | 79% | 3.1 m/s | 6.4 |
| 2023 | 21.1°C | 16.8°C | 12.5°C | 24.9°C | 9.0°C | 56 mm | 80% | 3.4 m/s | 6.5 |
| 2022 | 19.5°C | 15.4°C | 11.4°C | 24.0°C | 7.3°C | 62 mm | 79% | 3.4 m/s | 6.5 |
| 2021 | 19.6°C | 15.7°C | 11.8°C | 24.4°C | 9.3°C | 115 mm | 84% | 2.6 m/s | 5.2 |
| 2020 | 18.7°C | 15.0°C | 11.4°C | 25.7°C | 7.5°C | 51 mm | 80% | 3.6 m/s | 6.1 |
| 2019 | 18.6°C | 15.0°C | 11.4°C | 25.0°C | 9.0°C | 95 mm | 82% | 3.6 m/s | 6.1 |
| 2018 | 20.3°C | 15.9°C | 11.4°C | 24.3°C | 7.9°C | 4 mm | 79% | 3.2 m/s | 6.2 |
| 2017 | 20.3°C | 16.4°C | 12.6°C | 26.0°C | 9.1°C | 53 mm | 79% | 3.6 m/s | 6.5 |
| 2016 | 18.6°C | 15.1°C | 11.6°C | 22.9°C | 8.6°C | 98 mm | 85% | 3.3 m/s | 5 |
| 2015 | 18.4°C | 14.3°C | 10.2°C | 23.1°C | 6.3°C | 26 mm | 79% | 3.7 m/s | 6.4 |
| 2014 | 19.1°C | 15.3°C | 11.5°C | 22.8°C | 8.7°C | 38 mm | 80% | 2.6 m/s | 6.2 |
| 2013 | 17.4°C | 13.7°C | 10.1°C | 23.6°C | 6.1°C | 33 mm | 82% | 3.9 m/s | 5.4 |
| 2012 | 17.3°C | 14.1°C | 11.0°C | 22.7°C | 7.2°C | 127 mm | 83% | 4.4 m/s | 5.4 |
| 2011 | 17.8°C | 14.2°C | 10.6°C | 24.5°C | 6.4°C | 72 mm | 81% | 4 m/s | 5.9 |
| 2010 | 19.4°C | 15.0°C | 10.7°C | 23.8°C | 6.4°C | 45 mm | 79% | 2.8 m/s | 6.4 |
| 2009 | 19.1°C | 15.0°C | 11.0°C | 25.3°C | 7.4°C | 30 mm | 78% | 2.8 m/s | 6.4 |
| 2008 | 18.4°C | 14.7°C | 11.0°C | 23.7°C | 8.6°C | 36 mm | 80% | 3.3 m/s | 6.2 |
| 2007 | 19.0°C | 15.5°C | 12.0°C | 22.1°C | 7.9°C | 95 mm | 83% | 3.4 m/s | 5.2 |
| 2006 | 19.8°C | 15.5°C | 11.2°C | 24.4°C | 6.9°C | 24 mm | 78% | 2.5 m/s | 6.4 |
| 2005 | 19.5°C | 15.4°C | 11.4°C | 26.2°C | 6.3°C | 29 mm | 80% | 3.1 m/s | 6.2 |
| 2004 | 19.0°C | 15.2°C | 11.3°C | 24.5°C | 7.6°C | 41 mm | 81% | 3.3 m/s | 6.2 |
| 2003 | 19.5°C | 15.6°C | 11.6°C | 22.9°C | 9.2°C | 56 mm | 82% | 2.9 m/s | 5.8 |
| 2002 | 17.6°C | 14.1°C | 10.7°C | 22.3°C | 7.9°C | 66 mm | 84% | 3.4 m/s | 5.5 |
| 2001 | 17.9°C | 13.8°C | 9.7°C | 24.7°C | 5.5°C | 20 mm | 81% | 3 m/s | 6.3 |
| 2000 | 18.3°C | 14.7°C | 11.1°C | 22.7°C | 7.6°C | 24 mm | 84% | 3.1 m/s | 5.5 |
| 1999 | 17.9°C | 14.2°C | 10.5°C | 22.3°C | 6.8°C | 68 mm | 81% | 3.3 m/s | 6.2 |
| 1998 | 17.3°C | 14.1°C | 10.9°C | 22.6°C | 6.2°C | 109 mm | 86% | 4.2 m/s | 5.4 |
| 1997 🌧️ | 17.6°C | 14.3°C | 11.0°C | 21.9°C | 8.4°C | 127 mm | 83% | 3.8 m/s | 5.3 |
| 1996 | 18.5°C | 14.2°C | 9.8°C | 24.0°C | 6.9°C | 15 mm | 79% | 2.7 m/s | 6 |
| 1995 | 17.7°C | 13.5°C | 9.4°C | 26.2°C | 7.1°C | 26 mm | 82% | 3.4 m/s | 5.4 |
| 1994 | 18.3°C | 14.1°C | 10.0°C | 23.6°C | 6.2°C | 37 mm | 81% | 3.5 m/s | 6.1 |
| 1993 | 19.3°C | 15.3°C | 11.3°C | 23.1°C | 8.5°C | 50 mm | 82% | 2.7 m/s | 5.8 |
| 1992 | 19.7°C | 15.2°C | 10.7°C | 24.9°C | 7.6°C | 37 mm | 77% | 2.8 m/s | 5.4 |
| 1991 ❄️ | 15.8°C | 12.5°C | 9.1°C | 18.8°C | 3.1°C | 99 mm | 82% | 4.1 m/s | 5.2 |
| 1990 | 17.4°C | 13.9°C | 10.3°C | 21.5°C | 6.9°C | 53 mm | 80% | 3.5 m/s | 5.2 |
| 1989 | 18.7°C | 14.4°C | 10.2°C | 25.9°C | 3.9°C | 48 mm | 77% | 2.9 m/s | 6.2 |
| 1988 | 17.8°C | 14.0°C | 10.3°C | 21.4°C | 6.0°C | 20 mm | 83% | 3 m/s | 5.5 |
| 1987 | 16.6°C | 13.2°C | 9.8°C | 23.8°C | 6.7°C | 65 mm | 83% | 3.2 m/s | 5.1 |
| 1986 | 18.5°C | 14.3°C | 10.2°C | 24.3°C | 5.9°C | 23 mm | 82% | 3.6 m/s | 5.6 |
| 1985 | 16.5°C | 13.0°C | 9.5°C | 20.6°C | 5.2°C | 81 mm | 82% | 3.6 m/s | 5.5 |
| 1984 | 18.5°C | 14.3°C | 10.1°C | 23.5°C | 6.4°C | 28 mm | 79% | 2.7 m/s | 5.9 |
| 1983 | 17.9°C | 14.2°C | 10.5°C | 21.8°C | 7.1°C | 56 mm | 83% | 3.3 m/s | — |
| 1982 | 18.8°C | 15.4°C | 12.0°C | 24.2°C | 8.6°C | 69 mm | 83% | 3.3 m/s | — |
| 1981 | 16.7°C | 13.1°C | 9.5°C | 21.6°C | 6.5°C | 54 mm | 82% | 3.8 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 18.5°C with lows near 10.8°C (mean 14.7°C), based on 45 years of NASA POWER data.
June averages 54 mm of rainfall in Seaford, one of the drier months. The wettest on record was 127 mm in 1997.
The hottest June reached 26.9°C in 2025. The coldest dipped to 3.1°C in 1991.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 1.9°C. Daytime highs moved from 17.7°C to 20°C and overnight lows from 10.3°C to 11.9°C over the same span.
June is one of the warmer months of the year in Seaford and one of the drier months, so plan for around 18.5°C daytime highs and 10.8°C at night.
Not quite — June is the 9th coolest month in Seaford, averaging 14.7°C.
For June in Seaford, pack light layers you can adjust through the day, with typical highs of 18.5°C and lows of 10.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 81% — quite humid.
Average wind speed in June is 3.3 m/s. The windiest June on record averaged 4.4 m/s (2012).
The wettest June on record was 1997 with 127 mm. On average, June sees 54 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 Seaford 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.
