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Castries Weather in March
Castries in March sees high temperatures, with highs around 30°C (86°F) and overnight lows of 24°C (75°F). Around 38 mm (1.5 in) of rainfall is typical, so a light rain jacket is a sensible addition to your bag.
Rainfall in Castries in March
Typically, about 13 days will experience rainfall, with an average of 38 mm (1.5 in) for the month. A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.
Temperature in Castries in March
March in Castries brings typical temperatures with highs around 30°C (86°F) and lows of 24°C (75°F). This kind of day-to-night contrast is typical for this time of year. With lows around 24°C (75°F), the nights are warm enough that a sheet is usually all you need for bedding.
Sunshine in Castries in March
The month enjoys around 245 hours of sunshine, creating mostly sunny days with good weather conditions.Our weather planner can help you find worldwide destinations with pleasant weather during this period. January and February typically offer the best weather for Castries.
Castries Temperature in March
Min Temperature
24°C (75°F)
Max Temperature
30°C (86°F)
Chance of Rain
43%
Precipitation
38 mm (1.5 in)
Rainy days
13 days
Humidity
77% *
Sunshine
245 hours *
Percentage Sunshine
*
* Data from: Saint Lucia, Saint Lucia (4 KM, 2 Miles).
Castries Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Castries - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Castries typically stay consistent throughout March, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 23°C (73°F).
Average temperatures in March
Historical weather records for Castries in March
Browse day-by-day weather records for Castries spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Castries historical weather extremes in March
The extremes listed below come from historical weather data collected in Castries from 1976 through 2026.
- Castries recorded its highest March temperature of 37°C (99°F) on March 2, 2003.
- The coldest March day was on March 1, 2012, with a maximum of 25°C (77°F).
- Castries registered its coldest March night on March 20, 2003, with temperatures dropping to 17°C (63°F).
Best Places in Saint Lucia in March
Find out more about the weather in Saint Lucia and which places have the best travel conditions in this month. See all of Saint Lucia in March →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Castries in March
Warm temperatures in March make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Pack a light rain jacket or compact umbrella for occasional showers. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.
What To Do in Castries in March
We rated the following activities from 1 (least suitable) to 10 (best) to do.
-
Swimming10/10 -
Cycling8/10 -
Walking8/10 -
Barbeque10/10 -
Camping10/10 -
Outdoor sports8/10
Castries 3-Day Forecast
More climate data for Castries
Temperature Rainfall Sunshine Humidity
See the full Castries climate overview or explore weather in Saint Lucia.
Popular in March
Where to go in March - average daytime high across popular destinations.
Marigot Bay
29°C (84°F) Castries30°C (86°F) Soufrière29°C (84°F) Laborie29°C (84°F) Rodney Bay Village29°C (84°F) Cap Estate29°C (84°F) Gros Islet29°C (84°F) Vieux Fort28°C (82°F) Bucket list
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