Castlebar Weather in March
Thinking of visiting Castlebar in March? Expect low temperatures reaching 11°C (52°F) during the day, dropping to 4°C (39°F) at night, and note that quite a bit of rainfall is likely.
Rainfall in Castlebar in March
Climate statistics over the past 30 years suggest around 22 days of rain, with 93 mm (3.7 in) average for the month. This is a month with many wet days but modest rainfall totals, so showers are generally light and easy to manage.
Temperature in Castlebar in March
In March, Castlebar gets low temperatures, with highs of 11°C (52°F). Nights cool to around 4°C (39°F). Temperatures remain on the cold side all day. A proper warm jacket is worth having, not just for evenings. With overnight lows of 4°C (39°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Castlebar in March
The city usually sees around 89 hours of sunlight, indicating fewer sunny days.If you prefer enjoying temperate temperatures and rain-free days, June typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Castlebar Temperature in March
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Castlebar Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Castlebar - and find the best time to visit.
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in Castlebar typically stay consistent throughout March, with daily highs averaging around 11°C (52°F). Nights are cold, with lows typically ranging from 2°C (36°F) to 5°C (41°F).
Average temperatures in March
Daily Historical Precipitation
49-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in March
Historical weather records for Castlebar in March
Browse day-by-day weather records for Castlebar spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Castlebar historical weather extremes in March
According to our 32 years of weather records for Castlebar, the following extremes were recorded between 1994 and 2026.
- The warmest day in March was on March 27, 2012, with a maximum of 19°C (66°F).
- The coldest March day was on March 1, 2018, with a maximum of -1°C (30°F).
- Castlebar registered its coldest March night on March 1, 2018, with temperatures dropping to -5°C (23°F).
- Peak precipitation in March occurred on March 16, 2019, when 25 mm (1 in) of precipitation was measured.
Best Places in Ireland in March
Find out more about the weather in Ireland and which places have the best travel conditions in this month. See all of Ireland in March →
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 Castlebar in March
Pack for changing conditions in Castlebar in March. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Prepare for significant rainfall with proper waterproof clothing and shoes. You can probably leave your sunglasses at home, because sunny days are pretty rare this month.
What To Do in Castlebar in March
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming4/10 -
Cycling6/10 -
Walking6/10 -
Camping4/10 -
Outdoor sports6/10
Castlebar 3-Day Forecast
Temperature Rainfall Sunshine Humidity
See the full Castlebar climate overview or explore weather in Ireland.
Popular in March
Where to go in March - average daytime high across popular destinations.
Cork
11°C (52°F) Kilkenny
11°C (52°F) Dublin11°C (52°F) Kenmare11°C (52°F) Galway
11°C (52°F) Killarney11°C (52°F) Westport11°C (52°F) Doolin11°C (52°F) 
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