March is one of the cooler months of the year in Rhyl, with average highs near 7.9°C and lows around 4.9°C (mean 6.4°C). It is about average for rainfall, averaging 75 mm of rainfall and 87% relative humidity across the period.
March is one of the cooler months of the year in Rhyl. Across 45 years of records, the warmest March in Rhyl was 2012 — when the month averaged 8°C — while the coldest was 2013 at 3.2°C. Typical March days reach 7.9°C with nights near 4.9°C. The long-term trend is warming, about 0.3°C per decade.
March is about average for rainfall in Rhyl, averaging 75 mm of rainfall. The wettest March on record was 2019 with 142 mm, while the driest was 2025 at 21 mm.
Relative humidity in Rhyl during March averages 87%. The most humid March was 1991 at 91%, and the least humid was 2008 at 84%.
March receives about 2.4 kWh/m²/day of solar energy in Rhyl. The sunniest March was 2025 at 3 kWh/m²/day, and the cloudiest was 1991 at 1.8.
Average wind speed in Rhyl during March is 5.5 m/s. The windiest March was 1994 at 7.5 m/s, while the calmest was 2011 at 3.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 5.5°C | 6.6°C | 6.6°C | 6.2°C | 7.3°C | +1.8°C |
| Avg High | 6.9°C | 8.0°C | 8.1°C | 7.7°C | 8.9°C | +2°C |
| Avg Low | 4.1°C | 5.1°C | 5.1°C | 4.7°C | 5.7°C | +1.6°C |
| Avg Rain | 88 mm | 71 mm | 64 mm | 78 mm | 74 mm | -14 mm |
March temperatures in Rhyl have risen by about 1.8°C between 1981–1985 and 2021–2025.
March has ranged from a record low of -2.7°C (2018) to a record high of 14.3°C (2012).
Rainfall in March is about average for rainfall, averaging 75 mm, with a wettest year of 142 mm.
A quieter season to visit Rhyl
If your dates are flexible, the more temperate months of August and July tend to be the most comfortable for visiting Rhyl. That said, March — with days averaging 7.9°C and nights around 4.9°C (mean 6.4°C) and moderate rainfall (75 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 | 9.6°C | 7.8°C | 5.9°C | 13.1°C | 1.9°C | 21 mm | 86% | 4.1 m/s | 3 |
| 2024 | 8.9°C | 7.5°C | 6.1°C | 10.8°C | 3.2°C | 110 mm | 90% | 5.5 m/s | 2.3 |
| 2023 | 8.2°C | 7.0°C | 5.8°C | 11.5°C | 1.9°C | 119 mm | 86% | 5.4 m/s | 2.3 |
| 2022 | 9.7°C | 7.7°C | 5.7°C | 13.6°C | 1.2°C | 38 mm | 85% | 4.4 m/s | 2.8 |
| 2021 | 8.3°C | 7.0°C | 5.7°C | 13.1°C | 2.5°C | 88 mm | 87% | 5.4 m/s | 2.4 |
| 2020 | 8.4°C | 6.6°C | 4.8°C | 13.0°C | 2.3°C | 66 mm | 85% | 5.7 m/s | 2.8 |
| 2019 🌧️ | 8.9°C | 7.5°C | 6.0°C | 11.1°C | 3.9°C | 142 mm | 87% | 6.2 m/s | 2.4 |
| 2018 | 6.1°C | 4.6°C | 3.0°C | 9.6°C | -2.7°C | 100 mm | 88% | 5.5 m/s | 2.3 |
| 2017 | 9.3°C | 7.7°C | 6.1°C | 12.1°C | 2.9°C | 118 mm | 89% | 5.1 m/s | 2.5 |
| 2016 | 7.3°C | 5.8°C | 4.4°C | 10.6°C | 2.2°C | 78 mm | 87% | 4.7 m/s | 2.5 |
| 2015 | 7.5°C | 5.9°C | 4.3°C | 10.2°C | 2.0°C | 81 mm | 86% | 5.9 m/s | 2.4 |
| 2014 | 8.8°C | 7.1°C | 5.4°C | 12.5°C | 2.6°C | 55 mm | 88% | 5.4 m/s | 2.6 |
| 2013 ❄️ | 4.6°C | 3.2°C | 1.8°C | 7.4°C | -0.5°C | 72 mm | 85% | 5.6 m/s | 2.3 |
| 2012 🔥 | 9.6°C | 8.0°C | 6.4°C | 14.3°C | 4.6°C | 26 mm | 88% | 3.9 m/s | 2.7 |
| 2011 | 8.1°C | 6.5°C | 5.0°C | 12.3°C | 1.6°C | 38 mm | 87% | 3.6 m/s | 2.7 |
| 2010 | 7.1°C | 5.6°C | 4.1°C | 10.3°C | -0.4°C | 69 mm | 88% | 4.2 m/s | 2.5 |
| 2009 | 8.0°C | 6.7°C | 5.3°C | 11.2°C | 2.4°C | 53 mm | 87% | 5.5 m/s | 2.6 |
| 2008 | 7.7°C | 6.4°C | 5.0°C | 10.3°C | 3.0°C | 96 mm | 84% | 7 m/s | 2.4 |
| 2007 | 8.8°C | 7.2°C | 5.6°C | 11.9°C | 2.2°C | 61 mm | 87% | 6 m/s | 2.7 |
| 2006 | 6.7°C | 5.3°C | 3.9°C | 10.4°C | 0.9°C | 120 mm | 85% | 5.9 m/s | 2.2 |
| 2005 | 8.5°C | 7.2°C | 5.9°C | 12.8°C | 1.2°C | 61 mm | 88% | 5 m/s | 2.2 |
| 2004 | 8.0°C | 6.4°C | 4.9°C | 12.2°C | 1.7°C | 61 mm | 87% | 5.6 m/s | 2.4 |
| 2003 | 9.2°C | 7.2°C | 5.2°C | 12.5°C | 2.0°C | 31 mm | 87% | 4.6 m/s | 2.9 |
| 2002 | 8.9°C | 7.3°C | 5.7°C | 11.5°C | 2.3°C | 42 mm | 87% | 5.4 m/s | 2.6 |
| 2001 | 6.5°C | 5.2°C | 3.8°C | 9.8°C | -0.3°C | 65 mm | 86% | 5 m/s | 2.5 |
| 2000 | 8.5°C | 7.2°C | 6.0°C | 11.2°C | 2.9°C | 53 mm | 87% | 5.4 m/s | 2.4 |
| 1999 | 7.8°C | 6.6°C | 5.4°C | 11.9°C | 1.7°C | 89 mm | 90% | 5.3 m/s | 2.4 |
| 1998 | 9.3°C | 7.9°C | 6.6°C | 12.5°C | 3.2°C | 117 mm | 89% | 5.3 m/s | 2.1 |
| 1997 | 9.1°C | 7.6°C | 6.1°C | 12.9°C | 2.6°C | 42 mm | 89% | 5.5 m/s | 2.4 |
| 1996 | 6.3°C | 4.6°C | 2.8°C | 9.3°C | -1.0°C | 54 mm | 87% | 5 m/s | 2 |
| 1995 | 7.0°C | 5.7°C | 4.3°C | 10.1°C | 1.7°C | 82 mm | 84% | 6.8 m/s | 2.1 |
| 1994 | 7.6°C | 6.3°C | 5.1°C | 10.4°C | 2.3°C | 90 mm | 87% | 7.5 m/s | 2.1 |
| 1993 | 7.6°C | 6.0°C | 4.4°C | 11.2°C | 1.3°C | 29 mm | 87% | 5.3 m/s | 2.2 |
| 1992 | 8.3°C | 6.9°C | 5.5°C | 10.1°C | 2.9°C | 98 mm | 88% | 6.7 m/s | 2 |
| 1991 | 8.5°C | 6.8°C | 5.2°C | 11.6°C | 2.5°C | 89 mm | 91% | 4.4 m/s | 1.8 |
| 1990 | 8.7°C | 7.3°C | 6.0°C | 12.4°C | 2.2°C | 25 mm | 86% | 7 m/s | 2.3 |
| 1989 | 8.4°C | 6.9°C | 5.3°C | 10.9°C | 1.4°C | 95 mm | 86% | 6.4 m/s | 2.1 |
| 1988 | 6.6°C | 5.5°C | 4.3°C | 8.9°C | 1.6°C | 109 mm | 89% | 5.4 m/s | 2.1 |
| 1987 | 5.8°C | 4.4°C | 2.9°C | 9.8°C | -0.7°C | 100 mm | 87% | 6.1 m/s | 2.4 |
| 1986 | 6.1°C | 4.5°C | 2.9°C | 8.6°C | -2.4°C | 83 mm | 89% | 6.2 m/s | 2.5 |
| 1985 | 6.1°C | 4.7°C | 3.4°C | 9.6°C | -0.1°C | 56 mm | 87% | 5.2 m/s | 2.3 |
| 1984 | 6.0°C | 4.7°C | 3.4°C | 7.8°C | 1.2°C | 43 mm | 87% | 4.3 m/s | 2.2 |
| 1983 | 7.1°C | 5.9°C | 4.8°C | 9.2°C | 2.9°C | 80 mm | 89% | 5.7 m/s | — |
| 1982 | 7.6°C | 6.0°C | 4.5°C | 10.9°C | 2.9°C | 89 mm | 86% | 5.8 m/s | — |
| 1981 | 8.2°C | 6.9°C | 5.6°C | 10.2°C | 2.0°C | 138 mm | 90% | 5.8 m/s | — |
Actual recorded March data for each year, 1981–2025 — sourced from NASA POWER.
The average high in March is around 7.9°C with lows near 4.9°C (mean 6.4°C), based on 45 years of NASA POWER data.
March averages 75 mm of rainfall in Rhyl, about average for rainfall. The wettest on record was 142 mm in 2019.
The hottest March reached 14.3°C in 2012. The coldest dipped to -2.7°C in 2018.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have risen by about 1.8°C. Daytime highs moved from 7°C to 8.9°C and overnight lows from 4.3°C to 5.8°C over the same span.
March is one of the cooler months of the year in Rhyl and about average for rainfall, so plan for around 7.9°C daytime highs and 4.9°C at night.
Not quite — March is the 3rd coolest month in Rhyl, averaging 6.4°C.
For March in Rhyl, pack warm layers and a jacket for chilly mornings, with typical highs of 7.9°C and lows of 4.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in March averages 87% — quite humid.
Average wind speed in March is 5.5 m/s. The windiest March on record averaged 7.5 m/s (1994).
The wettest March on record was 2019 with 142 mm. On average, March sees 75 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 Rhyl behaves each March, 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 March specifically, along with year-by-year records and how the month has changed over the decades.
