County Mayo Weather Forecast
County Mayo weather: 53°F, overcast. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Climate in County Mayo month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 45° | 37° | 4,8 in | ★★☆☆☆ |
| February | 48° | 40° | 4,8 in | ★★★☆☆ |
| March | 51° | 40° | 3,9 in | ★★★☆☆ |
| April | 55° | 43° | 4,7 in | ★★★☆☆ |
| May | 61° | 48° | 3,0 in | ★★★★☆ |
| June | 62° | 51° | 5,2 in | ★★★★☆ |
| July | 65° | 54° | 2,8 in | ★★★★☆ |
| August | 65° | 55° | 4,4 in | ★★★★☆ |
| September | 61° | 51° | 4,3 in | ★★★★☆ |
| October | 56° | 48° | 6,3 in | ★★★☆☆ |
| November | 51° | 43° | 5,4 in | ★★★☆☆ |
| December | 48° | 41° | 6,1 in | ★★☆☆☆ |
Climate type: Temperate. Source: Open-Meteo archive (ERA5).
Best time to visit County Mayo
Go in July. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: January, February and December - expect the least comfortable mix of heat, cold or rain.
Recent extremes in County Mayo
Highest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How County Mayo compares with nearby places
Annual averages, and the difference against County Mayo.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| Galway | 38 mi | 52°F | +33°F warmer | 55 in |
| County Galway | 38 mi | 52°F | +33°F warmer | 55 in |
| County Roscommon | 42 mi | 50°F | about the same | 47 in |
| Sligo | 47 mi | 50°F | 33°F cooler | 66 in |
| County Sligo | 47 mi | 50°F | 33°F cooler | 66 in |
What to pack, what to skip
- A packable rain shell - 7 of the next 7 days carry a real chance of rain
- If your dates are flexible, avoid January, February and December - historically the least comfortable months here.
See the County Mayo forecast by time range
County Mayo weather - more answers
Explore County Mayo
Every topic we hold for this place, and the same topic for the places around it.
Weather for related places
Frequently asked questions
Where is County Mayo?
County Mayo is a county in Ireland. Its coordinates are 53.8008, -9.3. It lies in Europe.
What is the weather like in County Mayo right now?
It is currently 53°F (12°C) with overcast. Humidity is 86% and wind is 3 mph.
When is the best time to visit County Mayo?
July offer the most comfortable conditions in County Mayo, which has a temperate climate. January, February and December are usually the hardest months for outdoor plans.
What time zone is County Mayo in?
County Mayo observes Europe/Dublin (UTC+01:00). The local time is 4:32 AM.
How many people live in County Mayo?
County Mayo has a population of approximately 138.000.
What is the nearest airport to County Mayo?
The closest airports are Dublin Airport (DUB), 127 mi away.
What are the top things to do in County Mayo?
Popular options include Snowdonia National Park.
What places are in County Mayo?
County Mayo covers 1 places in this atlas, including Westport.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (ie-counties) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 25, 2026 at 4:32 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
