June is one of the cooler months of the year in Westport, with average highs near 8.7°C and lows around 3.4°C (mean 6.1°C). It is a relatively wet time of year, averaging 173 mm of rainfall and 93% relative humidity across the period.
June is one of the cooler months of the year in Westport. Across 45 years of records, the warmest Junes in Westport were 2014 and 2023 — when the month averaged 7.7°C — while the coldest was 1991 at 4.2°C. Typical June days reach 8.7°C with nights near 3.4°C. The long-term trend is warming, about 0.3°C per decade.
June is a relatively wet time of year in Westport, averaging 173 mm of rainfall. The wettest June on record was 1986 with 290 mm, while the driest was 1997 at 81 mm.
Relative humidity in Westport during June averages 93%. The most humid June was 2002 at 95%, and the least humid was 1982 at 88%.
June receives about 1.4 kWh/m²/day of solar energy in Westport. The sunniest Junes were 2005, 2006 and 2023, among others at 1.6 kWh/m²/day, and the cloudiest were 1998, 2002 and 2004 at 1.2.
Average wind speed in Westport during June is 0.4 m/s. The windiest Junes were 2014, 2015 and 2022, among others at 0.5 m/s, while the calmest were 2023, 2024 and 2025, among others at 0.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 5.9°C | 5.4°C | 6.0°C | 6.3°C | 7.2°C | +1.3°C |
| Avg High | 8.6°C | 8.1°C | 8.7°C | 8.9°C | 9.8°C | +1.2°C |
| Avg Low | 3.3°C | 2.8°C | 3.4°C | 3.7°C | 4.6°C | +1.3°C |
| Avg Rain | 181 mm | 155 mm | 188 mm | 165 mm | 178 mm | -2 mm |
June temperatures in Westport have risen by about 1.1°C between 1981–1985 and 2021–2025.
June has ranged from a record low of -5.1°C (2012) to a record high of 14.1°C (2008).
Rainfall in June is a relatively wet time of year, averaging 173 mm, with a wettest year of 290 mm.
A quieter season to visit Westport
If your dates are flexible, the more temperate months of February and January tend to be the most comfortable for visiting Westport. That said, June — with days averaging 8.7°C and nights around 3.4°C (mean 6.1°C) and higher rainfall (173 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 9.3°C | 6.6°C | 3.9°C | 13.6°C | -2.7°C | 259 mm | 93% | 0.4 m/s | 1.5 |
| 2024 | 9.6°C | 7.0°C | 4.3°C | 13.0°C | 1.8°C | 161 mm | 93% | 0.4 m/s | 1.4 |
| 2023 | 10.4°C | 7.7°C | 5.0°C | 13.6°C | 0.0°C | 124 mm | 92% | 0.4 m/s | 1.6 |
| 2022 | 9.2°C | 7.1°C | 4.9°C | 13.7°C | -0.8°C | 241 mm | 95% | 0.5 m/s | 1.4 |
| 2021 | 10.0°C | 7.5°C | 5.0°C | 12.7°C | -1.6°C | 181 mm | 94% | 0.4 m/s | 1.4 |
| 2020 | 10.0°C | 7.2°C | 4.4°C | 13.3°C | 0.6°C | 105 mm | 92% | 0.4 m/s | 1.5 |
| 2019 | 8.6°C | 5.7°C | 2.7°C | 13.0°C | -1.4°C | 96 mm | 93% | 0.4 m/s | 1.5 |
| 2018 | 8.7°C | 5.9°C | 3.2°C | 10.7°C | -1.3°C | 91 mm | 92% | 0.4 m/s | 1.5 |
| 2017 | 8.5°C | 5.7°C | 3.0°C | 12.1°C | -1.3°C | 92 mm | 93% | 0.4 m/s | 1.5 |
| 2016 | 10.4°C | 7.6°C | 4.9°C | 13.3°C | -0.9°C | 193 mm | 93% | 0.4 m/s | 1.5 |
| 2015 | 8.3°C | 6.0°C | 3.7°C | 13.6°C | -3.4°C | 204 mm | 94% | 0.5 m/s | 1.4 |
| 2014 🔥 | 10.1°C | 7.7°C | 5.3°C | 12.0°C | -0.3°C | 211 mm | 93% | 0.5 m/s | 1.3 |
| 2013 | 8.7°C | 6.1°C | 3.6°C | 12.9°C | -1.5°C | 221 mm | 92% | 0.4 m/s | 1.4 |
| 2012 | 7.9°C | 5.1°C | 2.4°C | 11.8°C | -5.1°C | 224 mm | 93% | 0.4 m/s | 1.4 |
| 2011 | 9.5°C | 7.0°C | 4.6°C | 13.4°C | 0.3°C | 132 mm | 94% | 0.4 m/s | 1.4 |
| 2010 | 8.4°C | 5.7°C | 3.1°C | 12.2°C | -2.0°C | 187 mm | 93% | 0.4 m/s | 1.5 |
| 2009 | 7.6°C | 4.6°C | 1.5°C | 11.2°C | -2.7°C | 91 mm | 90% | 0.5 m/s | 1.5 |
| 2008 | 9.2°C | 6.3°C | 3.3°C | 14.1°C | -1.3°C | 155 mm | 93% | 0.5 m/s | 1.4 |
| 2007 | 7.7°C | 4.9°C | 2.0°C | 11.8°C | -2.6°C | 214 mm | 91% | 0.5 m/s | 1.5 |
| 2006 | 7.6°C | 4.5°C | 1.4°C | 11.3°C | -2.6°C | 208 mm | 90% | 0.5 m/s | 1.6 |
| 2005 | 8.5°C | 5.7°C | 3.0°C | 11.8°C | -2.0°C | 140 mm | 91% | 0.4 m/s | 1.6 |
| 2004 | 9.2°C | 7.0°C | 4.8°C | 12.2°C | -0.9°C | 265 mm | 95% | 0.4 m/s | 1.2 |
| 2003 | 9.8°C | 7.4°C | 5.0°C | 13.3°C | -1.5°C | 282 mm | 94% | 0.4 m/s | 1.3 |
| 2002 | 9.3°C | 7.2°C | 5.2°C | 11.6°C | 1.1°C | 242 mm | 95% | 0.4 m/s | 1.2 |
| 2001 | 9.0°C | 6.2°C | 3.4°C | 12.4°C | -2.5°C | 163 mm | 92% | 0.4 m/s | 1.3 |
| 2000 | 8.8°C | 6.5°C | 4.2°C | 11.3°C | -1.3°C | 123 mm | 94% | 0.5 m/s | 1.3 |
| 1999 | 9.3°C | 6.6°C | 3.9°C | 12.7°C | -2.0°C | 107 mm | 92% | 0.4 m/s | 1.4 |
| 1998 | 9.4°C | 6.8°C | 4.2°C | 13.7°C | 0.2°C | 133 mm | 93% | 0.4 m/s | 1.2 |
| 1997 | 8.5°C | 5.4°C | 2.2°C | 11.9°C | -2.9°C | 81 mm | 90% | 0.5 m/s | 1.5 |
| 1996 | 7.6°C | 4.8°C | 2.1°C | 11.1°C | -3.2°C | 138 mm | 92% | 0.5 m/s | 1.5 |
| 1995 | 7.5°C | 5.1°C | 2.8°C | 11.5°C | -2.3°C | 202 mm | 94% | 0.4 m/s | 1.4 |
| 1994 | 7.6°C | 4.8°C | 2.0°C | 11.4°C | -2.7°C | 212 mm | 92% | 0.4 m/s | 1.5 |
| 1993 | 8.5°C | 6.6°C | 4.6°C | 11.9°C | -2.5°C | 281 mm | 95% | 0.4 m/s | 1.4 |
| 1992 | 6.7°C | 4.3°C | 2.0°C | 10.2°C | -3.0°C | 134 mm | 93% | 0.4 m/s | 1.3 |
| 1991 ❄️ | 7.3°C | 4.2°C | 1.1°C | 11.9°C | -3.1°C | 103 mm | 91% | 0.4 m/s | 1.5 |
| 1990 | 8.5°C | 5.8°C | 3.1°C | 11.4°C | -2.7°C | 162 mm | 92% | 0.4 m/s | 1.6 |
| 1989 | 8.6°C | 5.4°C | 2.3°C | 13.1°C | -3.1°C | 239 mm | 91% | 0.5 m/s | 1.4 |
| 1988 | 8.9°C | 6.1°C | 3.4°C | 13.3°C | -2.8°C | 152 mm | 93% | 0.4 m/s | 1.4 |
| 1987 | 8.3°C | 5.8°C | 3.3°C | 11.0°C | -0.9°C | 195 mm | 94% | 0.4 m/s | 1.3 |
| 1986 🌧️ | 7.8°C | 5.5°C | 3.1°C | 12.3°C | -2.8°C | 290 mm | 94% | 0.4 m/s | 1.4 |
| 1985 | 9.4°C | 6.8°C | 4.3°C | 12.8°C | -0.5°C | 179 mm | 93% | 0.4 m/s | 1.4 |
| 1984 | 9.3°C | 7.1°C | 4.9°C | 12.6°C | -0.5°C | 154 mm | 95% | 0.4 m/s | 1.3 |
| 1983 | 7.8°C | 5.4°C | 3.0°C | 11.1°C | -1.8°C | 99 mm | 93% | 0.5 m/s | — |
| 1982 | 8.4°C | 5.0°C | 1.5°C | 12.1°C | -2.2°C | 100 mm | 88% | 0.5 m/s | — |
| 1981 | 8.8°C | 6.2°C | 3.6°C | 13.5°C | -1.8°C | 221 mm | 92% | 0.4 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 8.7°C with lows near 3.4°C (mean 6.1°C), based on 45 years of NASA POWER data.
June averages 173 mm of rainfall in Westport, a relatively wet time of year. The wettest on record was 290 mm in 1986.
The hottest June reached 14.1°C in 2008. The coldest dipped to -5.1°C in 2012.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 1.1°C. Daytime highs moved from 8.7°C to 9.7°C and overnight lows from 3.5°C to 4.6°C over the same span.
June is one of the cooler months of the year in Westport and a relatively wet time of year, so plan for around 8.7°C daytime highs and 3.4°C at night.
Not quite — June is the 3rd coolest month in Westport, averaging 6.1°C.
For June in Westport, pack warm layers and a jacket for chilly mornings, with typical highs of 8.7°C and lows of 3.4°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 93% — quite humid.
Average wind speed in June is 0.4 m/s. The windiest June on record averaged 0.5 m/s (1982).
The wettest June on record was 1986 with 290 mm. On average, June sees 173 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 Westport 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.
