March is one of the cooler months of the year in Derry, with average highs near 8.1°C and lows around 3.5°C (mean 5.8°C). It is about average for rainfall, averaging 98 mm of rainfall and 89% relative humidity across the period.
March is one of the cooler months of the year in Derry. Across 45 years of records, the warmest March in Derry was 2012 — when the month averaged 7.7°C — while the coldest was 2013 at 2.7°C. Typical March days reach 8.1°C with nights near 3.5°C. The long-term March temperature trend is broadly flat.
March is about average for rainfall in Derry, averaging 98 mm of rainfall. The wettest March on record was 2019 with 155 mm, while the driest were 2012 and 2025 at 41 mm.
Relative humidity in Derry during March averages 89%. The most humid March was 1991 at 92%, and the least humid was 1984 at 86%.
March receives about 2.2 kWh/m²/day of solar energy in Derry. The sunniest March was 2022 at 2.9 kWh/m²/day, and the cloudiest was 1996 at 1.5.
Average wind speed in Derry during March is 5.1 m/s. The windiest March was 1994 at 7.2 m/s, while the calmest was 1984 at 3.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 5.3°C | 6.2°C | 6.0°C | 5.5°C | 6.4°C | +1.1°C |
| Avg High | 7.4°C | 8.3°C | 8.4°C | 7.9°C | 8.9°C | +1.5°C |
| Avg Low | 3.1°C | 4.0°C | 3.7°C | 3.2°C | 3.8°C | +0.7°C |
| Avg Rain | 118 mm | 102 mm | 92 mm | 88 mm | 85 mm | -33 mm |
March temperatures in Derry have risen by about 1.2°C between 1981–1985 and 2021–2025.
March has ranged from a record low of -3.2°C (1986) to a record high of 16.6°C (2012).
Rainfall in March is about average for rainfall, averaging 98 mm, with a wettest year of 155 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.2°C per decade while lows rose 0°C per decade, widening the gap between day and night.
A quieter season to visit Derry
If your dates are flexible, the more temperate months of July and August tend to be the most comfortable for visiting Derry. That said, March — with days averaging 8.1°C and nights around 3.5°C (mean 5.8°C) and higher rainfall (98 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 | 10.0°C | 7.1°C | 4.3°C | 14.6°C | 0.7°C | 41 mm | 89% | 4.3 m/s | 2.4 |
| 2024 | 8.7°C | 6.4°C | 4.1°C | 11.5°C | 0.9°C | 115 mm | 90% | 5 m/s | 2.1 |
| 2023 | 8.5°C | 6.0°C | 3.6°C | 13.0°C | -1.3°C | 128 mm | 89% | 4 m/s | 2.2 |
| 2022 | 9.8°C | 6.7°C | 3.6°C | 15.2°C | 0.0°C | 53 mm | 87% | 4.1 m/s | 2.9 |
| 2021 | 9.1°C | 6.9°C | 4.6°C | 13.8°C | 0.0°C | 96 mm | 91% | 4.9 m/s | 2.1 |
| 2020 | 7.5°C | 5.1°C | 2.7°C | 11.7°C | -0.2°C | 78 mm | 88% | 5.3 m/s | 2.4 |
| 2019 🌧️ | 8.4°C | 6.3°C | 4.2°C | 13.0°C | 1.7°C | 155 mm | 89% | 5.6 m/s | 2.2 |
| 2018 | 6.1°C | 3.9°C | 1.7°C | 9.2°C | -2.5°C | 76 mm | 89% | 4.8 m/s | 2.1 |
| 2017 | 9.4°C | 6.8°C | 4.1°C | 13.3°C | 0.1°C | 114 mm | 88% | 4.4 m/s | 2.5 |
| 2016 | 7.9°C | 5.7°C | 3.4°C | 11.4°C | 0.7°C | 82 mm | 90% | 4.1 m/s | 2.5 |
| 2015 | 7.8°C | 5.3°C | 2.8°C | 11.9°C | -0.3°C | 101 mm | 87% | 5.8 m/s | 2.5 |
| 2014 | 8.2°C | 5.9°C | 3.6°C | 12.5°C | 0.0°C | 86 mm | 91% | 5.2 m/s | 2.2 |
| 2013 ❄️ | 4.7°C | 2.7°C | 0.8°C | 8.4°C | -1.9°C | 69 mm | 88% | 5.1 m/s | 1.9 |
| 2012 🔥 | 10.4°C | 7.7°C | 5.1°C | 16.6°C | 1.6°C | 41 mm | 89% | 4.3 m/s | 2.4 |
| 2011 | 8.6°C | 6.1°C | 3.6°C | 13.3°C | -0.2°C | 64 mm | 90% | 3.9 m/s | 2.5 |
| 2010 | 7.4°C | 5.0°C | 2.5°C | 11.1°C | -1.6°C | 91 mm | 86% | 4.1 m/s | 2.4 |
| 2009 | 8.7°C | 6.3°C | 4.0°C | 12.9°C | 0.2°C | 97 mm | 89% | 5.5 m/s | 2.5 |
| 2008 | 7.5°C | 5.4°C | 3.3°C | 10.5°C | 1.1°C | 151 mm | 87% | 5.9 m/s | 2.3 |
| 2007 | 8.6°C | 6.0°C | 3.5°C | 11.8°C | 1.1°C | 94 mm | 89% | 5.4 m/s | 2.4 |
| 2006 | 7.2°C | 5.0°C | 2.8°C | 12.4°C | -1.1°C | 146 mm | 88% | 4.5 m/s | 2.1 |
| 2005 | 9.4°C | 7.4°C | 5.4°C | 14.9°C | 0.6°C | 85 mm | 90% | 4.7 m/s | 2.1 |
| 2004 | 8.4°C | 5.9°C | 3.5°C | 12.2°C | -1.0°C | 82 mm | 89% | 5.5 m/s | 2.4 |
| 2003 | 9.9°C | 6.8°C | 3.7°C | 14.0°C | -0.2°C | 51 mm | 89% | 4.4 m/s | 2.6 |
| 2002 | 9.0°C | 6.5°C | 4.1°C | 13.0°C | 0.3°C | 78 mm | 89% | 5.3 m/s | 2.3 |
| 2001 | 6.3°C | 4.2°C | 2.0°C | 10.4°C | -1.5°C | 70 mm | 89% | 4.8 m/s | 2.1 |
| 2000 | 8.7°C | 6.6°C | 4.5°C | 12.1°C | 0.3°C | 72 mm | 91% | 4.5 m/s | 2.2 |
| 1999 | 8.2°C | 6.0°C | 3.8°C | 12.4°C | 0.7°C | 80 mm | 89% | 5.2 m/s | 2.4 |
| 1998 | 9.1°C | 6.9°C | 4.8°C | 12.1°C | 1.0°C | 108 mm | 90% | 4.6 m/s | 1.9 |
| 1997 | 9.3°C | 7.1°C | 4.8°C | 12.1°C | -0.5°C | 76 mm | 90% | 5.4 m/s | 2.2 |
| 1996 | 6.6°C | 4.6°C | 2.5°C | 8.9°C | -0.7°C | 62 mm | 89% | 4.4 m/s | 1.5 |
| 1995 | 6.7°C | 4.6°C | 2.5°C | 11.8°C | -1.3°C | 138 mm | 88% | 6 m/s | 1.9 |
| 1994 | 7.9°C | 5.8°C | 3.6°C | 11.3°C | 0.5°C | 123 mm | 87% | 7.2 m/s | 2 |
| 1993 | 8.5°C | 6.1°C | 3.8°C | 13.3°C | -0.8°C | 81 mm | 89% | 5.3 m/s | 2 |
| 1992 | 8.5°C | 6.6°C | 4.6°C | 11.8°C | 1.7°C | 151 mm | 89% | 6.2 m/s | 2.1 |
| 1991 | 9.0°C | 6.7°C | 4.3°C | 12.2°C | -0.1°C | 111 mm | 92% | 3.9 m/s | 1.9 |
| 1990 | 9.2°C | 7.3°C | 5.4°C | 13.2°C | 1.3°C | 92 mm | 88% | 7 m/s | 1.9 |
| 1989 | 8.0°C | 5.6°C | 3.3°C | 11.4°C | -0.4°C | 133 mm | 89% | 5.9 m/s | 2 |
| 1988 | 7.9°C | 6.0°C | 4.1°C | 11.2°C | 0.2°C | 126 mm | 89% | 5.3 m/s | 2 |
| 1987 | 6.5°C | 4.3°C | 2.1°C | 11.2°C | -0.7°C | 115 mm | 88% | 5.1 m/s | 2.3 |
| 1986 | 7.0°C | 4.7°C | 2.4°C | 10.8°C | -3.2°C | 133 mm | 89% | 6.1 m/s | 2.3 |
| 1985 | 6.6°C | 4.6°C | 2.5°C | 11.1°C | -0.6°C | 98 mm | 88% | 4.9 m/s | 1.8 |
| 1984 | 6.6°C | 4.3°C | 2.1°C | 10.8°C | -0.6°C | 68 mm | 86% | 3.5 m/s | 2.2 |
| 1983 | 8.1°C | 6.2°C | 4.2°C | 11.7°C | 0.9°C | 129 mm | 90% | 5.6 m/s | — |
| 1982 | 7.7°C | 5.5°C | 3.3°C | 12.4°C | 0.6°C | 131 mm | 87% | 5.5 m/s | — |
| 1981 | 8.5°C | 6.2°C | 4.0°C | 13.1°C | -0.4°C | 131 mm | 89% | 5 m/s | — |
Actual recorded March data for each year, 1981–2025 — sourced from NASA POWER.
The average high in March is around 8.1°C with lows near 3.5°C (mean 5.8°C), based on 45 years of NASA POWER data.
March averages 98 mm of rainfall in Derry, about average for rainfall. The wettest on record was 155 mm in 2019.
The hottest March reached 16.6°C in 2012. The coldest dipped to -3.2°C in 1986.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have risen by about 1.2°C. Daytime highs moved from 7.5°C to 9.2°C and overnight lows from 3.2°C to 4°C over the same span.
March is one of the cooler months of the year in Derry and about average for rainfall, so plan for around 8.1°C daytime highs and 3.5°C at night.
Not quite — March is the 4th coolest month in Derry, averaging 5.8°C.
For March in Derry, pack warm layers and a jacket for chilly mornings, with typical highs of 8.1°C and lows of 3.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in March averages 89% — quite humid.
Average wind speed in March is 5.1 m/s. The windiest March on record averaged 7.2 m/s (1994).
The wettest March on record was 2019 with 155 mm. On average, March sees 98 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 Derry 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.
