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March Weather in St Martin, Guernsey

Last updated: August 23, 2025

In St Martin, Guernsey, the average temperature in March hovers around 9°C (49°F), with a minimum of 0°C (32°F) and a maximum of 13°C (55°F). During this month, you can expect about 73 mm (2.9 in) of precipitation spread over 15 days, contributing to an average humidity level of 85%. Be sure to prepare for the cool and moist conditions!

March Temperature in St Martin

In March in St Martin, the average temperature is 9°C (49°F). Maximum temperatures can reach 13°C (55°F), while minimums can drop to as low as 0°C (32°F). Be sure to pack layers for your trip, as the weather can vary significantly throughout the day.

March Weather in St Martin: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in St Martin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In St Martin, March typically has an average temperature of 9°C (49°F), with highs reaching up to 13°C (55°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec484848505458616362595451
Data source: Temperature data for St Martin generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

March Precipitation in St Martin

In St Martin in March, the precipitation amount is 73 mm (2.9 in) over the course of 15 days.

March Precipitation Trends in St Martin

The chart displays monthly precipitation patterns in St Martin, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In St Martin, March typically receives around 73 mm (2.9 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec948673345559375063144126163
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in St Martin

In St Martin in March humidity is 85%. With an average temperature of 9°C (49°F), this humidity feels like a damp chill that seeps into your bones, making every step outside a challenge as the moisture in the air weighs heavily and lingers, transforming even simple outings into a quest for comfort.

March Average Humidity in St Martin

This chart illustrates the average monthly humidity levels in St Martin, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in St Martin is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%85%84%81%77%63%71%76%89%90%90%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in St Martin

In St Martin in March, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in St Martin for better planning.

Maximum UV Index Levels in St Martin for March

The chart shows the monthly maximum UV Index (UVI) for St Martin in March, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In March, the maximum UV index in St Martin typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec234679876421
Data source: St Martin March UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How March Weather in St Martin Compares to Other Months

Weather in St Martin varies notably across the year, with each month offering distinct climate conditions. This page compares March’s weather to other months in St Martin, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in St Martin, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather9°C (49°F)94 mm (3.7 inches)89%low
February Weather9°C (48°F)86 mm (3.4 inches)88%moderate
March Weather9°C (49°F)73 mm (2.9 inches)85%moderate
April Weather10°C (50°F)34 mm (1.3 inches)84%high
May Weather12°C (54°F)55 mm (2.2 inches)81%high
June Weather14°C (58°F)59 mm (2.3 inches)77%very high
July Weather16°C (62°F)37 mm (1.5 inches)63%very high
August Weather17°C (63°F)50 mm (2.0 inches)71%high
September Weather17°C (62°F)63 mm (2.5 inches)76%high
October Weather15°C (59°F)144 mm (5.7 inches)89%moderate
November Weather12°C (54°F)126 mm (5.0 inches)90%low
December Weather11°C (51°F)163 mm (6.4 inches)90%low

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