May is close to Newport's year-round average, with average highs near 12.9°C and lows around 10.4°C (mean 11.7°C). It is one of the drier months, averaging 48 mm of rainfall and 86% relative humidity across the period.
May is close to Newport's year-round average. Across 45 years of records, the warmest May in Newport was 2024 — when the month averaged 13.1°C — while the coldest was 1996 at 9.7°C. Typical May days reach 12.9°C with nights near 10.4°C. The long-term trend is warming, about 0.4°C per decade.
May is one of the drier months in Newport, averaging 48 mm of rainfall. The wettest May on record was 1994 with 114 mm, while the driest was 2020 at 5 mm.
Relative humidity in Newport during May averages 86%. The most humid Mays were 1986 and 2000 at 89%, and the least humid was 2020 at 80%.
May receives about 5.5 kWh/m²/day of solar energy in Newport. The sunniest May was 2020 at 6.8 kWh/m²/day, and the cloudiest was 1984 at 4.3.
Average wind speed in Newport during May is 4.8 m/s. The windiest May was 1996 at 6.3 m/s, while the calmest was 2004 at 3.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 10.9°C | 11.5°C | 11.8°C | 11.7°C | 12.5°C | +1.6°C |
| Avg High | 12.1°C | 12.9°C | 13.0°C | 13.0°C | 13.8°C | +1.7°C |
| Avg Low | 9.7°C | 10.1°C | 10.6°C | 10.5°C | 11.1°C | +1.4°C |
| Avg Rain | 49 mm | 42 mm | 59 mm | 46 mm | 45 mm | -4 mm |
May temperatures in Newport have risen by about 1.8°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 4.8°C (1996) to a record high of 19.5°C (1998).
Rainfall in May is one of the drier months, averaging 48 mm, with a wettest year of 114 mm.
A good time to visit Newport
May is a good time to visit Newport, with days averaging 12.9°C and nights around 10.4°C (mean 11.7°C, close to Newport's yearly average) and moderate rainfall. August and July are marginally more temperate, but May still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 14.6°C | 13.0°C | 11.5°C | 17.2°C | 7.6°C | 30 mm | 84% | 4.7 m/s | 5.9 |
| 2024 🔥 | 14.1°C | 13.1°C | 12.1°C | 16.8°C | 10.8°C | 76 mm | 88% | 3.9 m/s | 5.4 |
| 2023 | 14.2°C | 12.6°C | 10.9°C | 16.6°C | 9.1°C | 36 mm | 85% | 4.7 m/s | 6.1 |
| 2022 | 14.1°C | 12.9°C | 11.7°C | 16.1°C | 10.1°C | 38 mm | 86% | 4.2 m/s | 5.6 |
| 2021 | 12.0°C | 10.9°C | 9.8°C | 15.1°C | 7.2°C | 84 mm | 83% | 5.8 m/s | 5.7 |
| 2020 | 14.0°C | 12.3°C | 10.6°C | 18.7°C | 7.0°C | 5 mm | 80% | 4.9 m/s | 6.8 |
| 2019 | 13.2°C | 11.9°C | 10.6°C | 15.7°C | 6.8°C | 33 mm | 83% | 4.2 m/s | 5.7 |
| 2018 | 13.8°C | 12.2°C | 10.5°C | 18.5°C | 7.1°C | 31 mm | 86% | 3.5 m/s | 5.9 |
| 2017 | 13.5°C | 12.4°C | 11.3°C | 16.3°C | 7.9°C | 51 mm | 88% | 4.8 m/s | 5.3 |
| 2016 | 13.2°C | 11.9°C | 10.6°C | 17.4°C | 7.8°C | 42 mm | 86% | 4.6 m/s | 5.6 |
| 2015 | 12.7°C | 11.6°C | 10.5°C | 16.4°C | 8.8°C | 67 mm | 85% | 5.9 m/s | 5.4 |
| 2014 | 13.3°C | 12.3°C | 11.4°C | 15.7°C | 7.9°C | 86 mm | 85% | 4.9 m/s | 5.3 |
| 2013 | 11.6°C | 10.3°C | 8.9°C | 15.7°C | 5.9°C | 52 mm | 85% | 5.1 m/s | 5.3 |
| 2012 | 13.1°C | 11.8°C | 10.5°C | 16.5°C | 7.2°C | 45 mm | 86% | 4.5 m/s | 5.2 |
| 2011 | 13.2°C | 12.2°C | 11.1°C | 14.1°C | 9.3°C | 35 mm | 84% | 5.9 m/s | 6 |
| 2010 | 12.1°C | 10.6°C | 9.2°C | 16.0°C | 5.9°C | 21 mm | 83% | 4.1 m/s | 5.5 |
| 2009 | 13.1°C | 11.9°C | 10.8°C | 17.4°C | 7.8°C | 32 mm | 86% | 5.5 m/s | 5.6 |
| 2008 | 14.0°C | 12.8°C | 11.6°C | 17.6°C | 9.1°C | 89 mm | 86% | 4.3 m/s | 5.4 |
| 2007 | 13.8°C | 12.5°C | 11.2°C | 16.6°C | 7.8°C | 105 mm | 86% | 6 m/s | 4.9 |
| 2006 | 12.4°C | 11.4°C | 10.3°C | 15.9°C | 8.6°C | 71 mm | 88% | 5.3 m/s | 4.9 |
| 2005 | 12.4°C | 11.2°C | 10.0°C | 17.1°C | 7.6°C | 34 mm | 84% | 5.3 m/s | 5.6 |
| 2004 | 13.3°C | 12.0°C | 10.7°C | 17.2°C | 7.7°C | 33 mm | 85% | 3.4 m/s | 5.7 |
| 2003 | 12.4°C | 11.5°C | 10.5°C | 15.1°C | 8.3°C | 41 mm | 87% | 5.2 m/s | 5.3 |
| 2002 | 12.9°C | 11.9°C | 10.8°C | 15.3°C | 7.8°C | 79 mm | 86% | 5.7 m/s | 5.6 |
| 2001 | 13.0°C | 11.4°C | 9.9°C | 15.8°C | 6.3°C | 26 mm | 87% | 4.7 m/s | 5.6 |
| 2000 | 12.7°C | 11.5°C | 10.4°C | 14.3°C | 8.2°C | 79 mm | 89% | 5 m/s | 5.2 |
| 1999 | 13.6°C | 12.4°C | 11.3°C | 16.8°C | 8.9°C | 27 mm | 88% | 5 m/s | 5.3 |
| 1998 | 14.2°C | 12.6°C | 10.9°C | 19.5°C | 6.3°C | 20 mm | 86% | 4.2 m/s | 6.6 |
| 1997 | 12.8°C | 11.6°C | 10.3°C | 15.7°C | 5.2°C | 47 mm | 85% | 5.3 m/s | 5.7 |
| 1996 ❄️ | 11.1°C | 9.7°C | 8.2°C | 14.8°C | 4.8°C | 77 mm | 83% | 6.3 m/s | 4.8 |
| 1995 | 12.7°C | 11.5°C | 10.2°C | 16.8°C | 6.6°C | 29 mm | 83% | 4.4 m/s | 5.8 |
| 1994 🌧️ | 11.8°C | 10.8°C | 9.9°C | 13.6°C | 8.2°C | 114 mm | 87% | 4.9 m/s | 5.1 |
| 1993 | 12.9°C | 11.6°C | 10.2°C | 15.4°C | 7.3°C | 57 mm | 86% | 5.6 m/s | 5 |
| 1992 | 13.4°C | 12.0°C | 10.6°C | 16.1°C | 7.6°C | 23 mm | 86% | 4.2 m/s | 6.1 |
| 1991 | 12.0°C | 10.4°C | 8.8°C | 17.2°C | 5.4°C | 12 mm | 85% | 3.9 m/s | 4.8 |
| 1990 | 14.1°C | 12.6°C | 11.0°C | 17.4°C | 9.0°C | 11 mm | 83% | 4 m/s | 6.2 |
| 1989 | 13.8°C | 12.4°C | 10.9°C | 17.0°C | 8.8°C | 9 mm | 85% | 3.8 m/s | 6.2 |
| 1988 | 12.9°C | 11.7°C | 10.5°C | 17.2°C | 8.9°C | 33 mm | 86% | 4.5 m/s | 5.3 |
| 1987 | 11.9°C | 10.3°C | 8.7°C | 15.6°C | 5.3°C | 27 mm | 83% | 4.9 m/s | 5 |
| 1986 | 11.0°C | 10.1°C | 9.1°C | 12.9°C | 7.3°C | 64 mm | 89% | 5.5 m/s | 4.8 |
| 1985 | 12.3°C | 11.0°C | 9.7°C | 15.9°C | 6.8°C | 43 mm | 86% | 4.4 m/s | 4.8 |
| 1984 | 11.6°C | 10.0°C | 8.5°C | 15.7°C | 6.1°C | 73 mm | 84% | 4.7 m/s | 4.3 |
| 1983 | 11.3°C | 10.4°C | 9.5°C | 13.9°C | 7.8°C | 63 mm | 88% | 4.8 m/s | — |
| 1982 | 12.4°C | 11.1°C | 9.9°C | 15.6°C | 5.6°C | 35 mm | 85% | 4.3 m/s | — |
| 1981 | 12.0°C | 11.1°C | 10.2°C | 16.2°C | 6.9°C | 93 mm | 89% | 5 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 12.9°C with lows near 10.4°C (mean 11.7°C), based on 45 years of NASA POWER data.
May averages 48 mm of rainfall in Newport, one of the drier months. The wettest on record was 114 mm in 1994.
The hottest May reached 19.5°C in 1998. The coldest dipped to 4.8°C in 1996.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 1.8°C. Daytime highs moved from 11.9°C to 13.8°C and overnight lows from 9.6°C to 11.2°C over the same span.
May is close to Newport's year-round average and one of the drier months, so plan for around 12.9°C daytime highs and 10.4°C at night.
Not quite — May is the 7th coolest month in Newport, averaging 11.7°C.
For May in Newport, pack light layers you can adjust through the day, with typical highs of 12.9°C and lows of 10.4°C.
Relative humidity in May averages 86% — quite humid.
Average wind speed in May is 4.8 m/s. The windiest May on record averaged 6.3 m/s (1996).
The wettest May on record was 1994 with 114 mm. On average, May sees 48 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 Newport behaves each May, 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 May specifically, along with year-by-year records and how the month has changed over the decades.
