County Mayo Climate and Average Weather
Climate of County Mayo: average temperatures, rainfall and seasons month by month.
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).
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 |
Climate by city in County Mayo
1 cities mapped in this atlas
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.
What this means for County Mayo
Today is about average for August. The forecast high of 63°F is in line with the 65°F typical for this month.
A 20% chance means most of the area stays dry; a passing shower is possible but short.
No weather-related travel disruption is expected today. Roads and airports should run normally.
Northern Hemisphere, so peak summer falls in June to August.
The gap between the warmest and coldest month averages 51°F.
What to pack, what to skip
- Layers - the daily swing is 56°F, so mornings feel nothing like afternoons
- A packable rain shell - 4 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.
Summary
County Mayo is a county in Ireland. County Mayo is a county in Ireland. It has a population of about 138.000.
Right now it is 51°F (11°C) in County Mayo with partly cloudy. It feels like 49°F. Today runs from 51°F to 63°F. Chance of precipitation is 20%. Sightseeing conditions score 8.5/10 - excellent - go now.
The best time to visit County Mayo is July. The climate is temperate. January, February and December tend to be the least comfortable months. July is the warmest month with average highs near 65°F, while January is the coldest with lows near 37°F.
The closest major airport is Dublin Airport (DUB), about 127 mi away. Nearby highlights include Snowdonia National Park.
In plain terms. Today is about average for August. The forecast high of 63°F is in line with the 65°F typical for this month. The best window to be outside is roughly 9 AM to 12 PM, when temperature, rain chance and wind line up best. fishing is the strongest bet in County Mayo today at 9.6/10. No weather-related travel disruption is expected today. Roads and airports should run normally.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Quick facts about County Mayo
Weather map for County Mayo
Animated model layers. Pick a layer to load it.
Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Explore County Mayo
Every topic we hold for this place, and the same topic for the places around it.
Climate 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 51°F (11°C) with partly cloudy. Humidity is 92% and wind is 4 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 11:59 PM.
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 22, 2026 at 11:59 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
