March is one of the warmer months of the year in Thames, with average highs near 21.7°C and lows around 15.8°C (mean 18.8°C). It is one of the drier months, averaging 82 mm of rainfall and 78% relative humidity across the period.
March is one of the warmer months of the year in Thames. Across 45 years of records, the warmest Marchs in Thames were 1981 and 2019 — when the month averaged 20.1°C — while the coldest was 2004 at 17°C. Typical March days reach 21.7°C with nights near 15.8°C. The long-term March temperature trend is broadly flat.
March is one of the drier months in Thames, averaging 82 mm of rainfall. The wettest March on record was 2017 with 225 mm, while the driest was 2010 at 9 mm.
Relative humidity in Thames during March averages 78%. The most humid March was 1984 at 83%, and the least humid was 1994 at 70%.
March receives about 4.6 kWh/m²/day of solar energy in Thames. The sunniest Marchs were 2014 and 2025 at 5.1 kWh/m²/day, and the cloudiest were 1984, 1988 and 1997 at 4.1.
Average wind speed in Thames during March is 2.7 m/s. The windiest March was 1992 at 3.4 m/s, while the calmest was 2019 at 1.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 18.7°C | 18.5°C | 18.7°C | 19.1°C | 18.6°C | -0.1°C |
| Avg High | 21.5°C | 21.5°C | 21.6°C | 22.1°C | 21.5°C | 0°C |
| Avg Low | 15.8°C | 15.6°C | 15.8°C | 16.2°C | 15.6°C | -0.2°C |
| Avg Rain | 98 mm | 80 mm | 67 mm | 86 mm | 77 mm | -21 mm |
March temperatures in Thames have fallen by about 0.3°C between 1981–1985 and 2021–2025.
March has ranged from a record low of 8.6°C (1993) to a record high of 26.7°C (2018).
Rainfall in March is one of the drier months, averaging 82 mm, with a wettest year of 225 mm.
One of the best times to visit Thames
March is one of the best times to visit Thames. Expect days averaging 21.7°C and nights around 15.8°C (mean 18.8°C) — warmer than Thames's yearly average — with higher rainfall (82 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 | 22.4°C | 19.1°C | 15.7°C | 24.6°C | 12.0°C | 72 mm | 76% | 2.2 m/s | 5.1 |
| 2024 | 20.6°C | 17.6°C | 14.6°C | 23.1°C | 9.5°C | 72 mm | 77% | 2.9 m/s | 4.6 |
| 2023 | 21.1°C | 18.0°C | 14.9°C | 23.8°C | 9.0°C | 71 mm | 79% | 2.4 m/s | 5 |
| 2022 | 22.4°C | 19.7°C | 17.0°C | 24.7°C | 13.9°C | 127 mm | 77% | 2.6 m/s | 4.9 |
| 2021 | 21.4°C | 18.6°C | 15.8°C | 22.9°C | 12.4°C | 74 mm | 77% | 2.5 m/s | 4.6 |
| 2020 | 21.4°C | 18.4°C | 15.4°C | 24.4°C | 12.0°C | 49 mm | 76% | 2.6 m/s | 4.7 |
| 2019 | 23.1°C | 20.1°C | 17.1°C | 26.1°C | 14.9°C | 47 mm | 78% | 1.9 m/s | 4.7 |
| 2018 | 22.4°C | 19.9°C | 17.3°C | 26.7°C | 14.9°C | 61 mm | 79% | 2.7 m/s | 4.6 |
| 2017 🌧️ | 22.2°C | 19.4°C | 16.7°C | 24.6°C | 13.3°C | 225 mm | 82% | 2.7 m/s | 4.3 |
| 2016 | 22.5°C | 19.8°C | 17.1°C | 24.7°C | 13.8°C | 86 mm | 79% | 2.7 m/s | 4.6 |
| 2015 | 22.2°C | 19.2°C | 16.3°C | 25.4°C | 12.3°C | 73 mm | 78% | 2.5 m/s | 4.5 |
| 2014 | 22.0°C | 18.3°C | 14.7°C | 24.2°C | 11.8°C | 30 mm | 74% | 2.5 m/s | 5.1 |
| 2013 | 22.4°C | 19.2°C | 16.1°C | 24.9°C | 14.2°C | 30 mm | 75% | 2.3 m/s | 5 |
| 2012 | 20.2°C | 17.5°C | 14.8°C | 22.1°C | 10.4°C | 141 mm | 79% | 3.2 m/s | 4.4 |
| 2011 | 21.8°C | 19.0°C | 16.1°C | 24.6°C | 11.8°C | 155 mm | 78% | 2.5 m/s | 4.6 |
| 2010 | 22.2°C | 18.9°C | 15.6°C | 25.5°C | 10.8°C | 9 mm | 73% | 3 m/s | 4.7 |
| 2009 | 21.0°C | 18.1°C | 15.2°C | 24.4°C | 11.6°C | 59 mm | 77% | 2.8 m/s | 4.8 |
| 2008 | 22.2°C | 19.3°C | 16.3°C | 24.7°C | 14.6°C | 53 mm | 79% | 2.5 m/s | 4.5 |
| 2007 | 21.9°C | 19.2°C | 16.4°C | 24.6°C | 13.5°C | 143 mm | 79% | 3 m/s | 4.3 |
| 2006 | 21.0°C | 18.2°C | 15.4°C | 23.3°C | 10.5°C | 96 mm | 79% | 2.9 m/s | 4.4 |
| 2005 | 22.7°C | 19.6°C | 16.5°C | 24.9°C | 14.2°C | 48 mm | 76% | 2.3 m/s | 4.9 |
| 2004 ❄️ | 20.3°C | 17.0°C | 13.6°C | 23.0°C | 10.2°C | 17 mm | 77% | 2.6 m/s | 5 |
| 2003 | 21.1°C | 18.7°C | 16.4°C | 23.2°C | 12.9°C | 118 mm | 82% | 2.8 m/s | 4.2 |
| 2002 | 22.0°C | 19.2°C | 16.4°C | 24.0°C | 13.5°C | 52 mm | 77% | 3 m/s | 4.3 |
| 2001 | 21.7°C | 18.9°C | 16.1°C | 23.3°C | 13.1°C | 27 mm | 74% | 2.5 m/s | 4.4 |
| 2000 | 22.3°C | 18.8°C | 15.4°C | 25.3°C | 12.3°C | 53 mm | 76% | 2.3 m/s | 4.6 |
| 1999 | 22.5°C | 19.9°C | 17.2°C | 24.7°C | 15.0°C | 58 mm | 80% | 2.7 m/s | 4.3 |
| 1998 | 22.9°C | 20.0°C | 17.1°C | 24.4°C | 14.6°C | 47 mm | 79% | 2.8 m/s | 4.5 |
| 1997 | 21.0°C | 18.3°C | 15.6°C | 24.2°C | 13.1°C | 113 mm | 80% | 3 m/s | 4.1 |
| 1996 | 20.9°C | 17.9°C | 14.8°C | 23.3°C | 11.2°C | 104 mm | 76% | 3.1 m/s | 4.7 |
| 1995 | 22.0°C | 19.3°C | 16.6°C | 25.9°C | 13.5°C | 190 mm | 78% | 2.7 m/s | 4.4 |
| 1994 | 21.7°C | 18.2°C | 14.7°C | 24.3°C | 10.8°C | 10 mm | 70% | 3 m/s | 5 |
| 1993 | 20.2°C | 17.2°C | 14.2°C | 24.3°C | 8.6°C | 50 mm | 78% | 2.9 m/s | 4.4 |
| 1992 | 20.1°C | 17.1°C | 14.1°C | 24.4°C | 10.7°C | 55 mm | 76% | 3.4 m/s | 4.2 |
| 1991 | 20.8°C | 17.8°C | 14.9°C | 23.3°C | 12.4°C | 56 mm | 76% | 2.7 m/s | 4.8 |
| 1990 | 22.6°C | 19.7°C | 16.8°C | 25.1°C | 10.5°C | 116 mm | 80% | 3 m/s | 4.4 |
| 1989 | 21.9°C | 19.0°C | 16.1°C | 24.1°C | 12.8°C | 28 mm | 76% | 2.6 m/s | 4.6 |
| 1988 | 20.7°C | 18.1°C | 15.5°C | 23.0°C | 12.6°C | 220 mm | 81% | 3.2 m/s | 4.1 |
| 1987 | 20.5°C | 17.5°C | 14.5°C | 22.8°C | 11.1°C | 178 mm | 77% | 2.8 m/s | 4.8 |
| 1986 | 22.0°C | 18.8°C | 15.5°C | 24.1°C | 12.0°C | 41 mm | 76% | 2.3 m/s | 5 |
| 1985 | 21.5°C | 18.6°C | 15.7°C | 24.1°C | 11.7°C | 142 mm | 79% | 2.8 m/s | 4.5 |
| 1984 | 21.0°C | 18.7°C | 16.4°C | 22.6°C | 14.4°C | 174 mm | 83% | 2.9 m/s | 4.1 |
| 1983 | 21.9°C | 18.7°C | 15.6°C | 24.6°C | 10.7°C | 49 mm | 78% | 2.8 m/s | — |
| 1982 | 21.2°C | 18.4°C | 15.6°C | 23.4°C | 12.4°C | 15 mm | 77% | 2.4 m/s | — |
| 1981 🔥 | 22.6°C | 20.1°C | 17.5°C | 25.0°C | 12.8°C | 39 mm | 79% | 2.7 m/s | — |
Actual recorded March data for each year, 1981–2025 — sourced from NASA POWER.
The average high in March is around 21.7°C with lows near 15.8°C (mean 18.8°C), based on 45 years of NASA POWER data.
March averages 82 mm of rainfall in Thames, one of the drier months. The wettest on record was 225 mm in 2017.
The hottest March reached 26.7°C in 2018. The coldest dipped to 8.6°C in 1993.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have fallen by about 0.3°C. Daytime highs moved from 21.6°C to 21.6°C and overnight lows from 16.2°C to 15.6°C over the same span.
March is one of the warmer months of the year in Thames and one of the drier months, so plan for around 21.7°C daytime highs and 15.8°C at night.
Not quite — March is the 10th coolest month in Thames, averaging 18.8°C.
For March in Thames, pack light layers you can adjust through the day, with typical highs of 21.7°C and lows of 15.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in March averages 78% — quite humid.
Average wind speed in March is 2.7 m/s. The windiest March on record averaged 3.4 m/s (1992).
The wettest March on record was 2017 with 225 mm. On average, March sees 82 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 Thames 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.
