County Cavan Climate and Average Weather
Climate of County Cavan: average temperatures, rainfall and seasons month by month.
Climate in County Cavan 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 | 44° | 35° | 3,5 in | ★★☆☆☆ |
| February | 48° | 39° | 3,7 in | ★★★☆☆ |
| March | 51° | 39° | 3,1 in | ★★★☆☆ |
| April | 55° | 42° | 4,0 in | ★★★☆☆ |
| May | 61° | 47° | 3,0 in | ★★★★☆ |
| June | 63° | 51° | 4,2 in | ★★★★☆ |
| July | 67° | 54° | 2,6 in | ★★★★☆ |
| August | 66° | 54° | 2,7 in | ★★★★☆ |
| September | 62° | 50° | 4,2 in | ★★★★☆ |
| October | 56° | 47° | 4,6 in | ★★★☆☆ |
| November | 49° | 41° | 3,5 in | ★★★☆☆ |
| December | 48° | 40° | 3,7 in | ★★★☆☆ |
Climate type: Temperate. Source: Open-Meteo archive (ERA5).
Recent extremes in County Cavan
Highest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How County Cavan compares with nearby places
Annual averages, and the difference against County Cavan.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| County Monaghan | 24 mi | 50°F | about the same | 41 in |
| County Longford | 25 mi | 50°F | about the same | 46 in |
| County Leitrim | 28 mi | 49°F | 33°F cooler | 62 in |
| County Westmeath | 32 mi | 50°F | about the same | 42 in |
| County Louth | 36 mi | 51°F | +33°F warmer | 42 in |
Best time to visit County Cavan
Go in July and August. 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 Cavan
Today is slightly warmer than average for August. The forecast high of 71°F is 5°F above the 66°F typical for this month.
Rain is very unlikely today - plans do not need a backup.
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 53°F.
What to pack, what to skip
- Layers - the daily swing is 60°F, so mornings feel nothing like afternoons
- A packable rain shell - 5 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 Cavan is a county in Ireland. County Cavan is a county in Ireland. It has a population of about 81.000.
Right now it is 47°F (8°C) in County Cavan with mainly clear. It feels like 45°F. Today runs from 46°F to 71°F. Chance of precipitation is 0%. Sightseeing conditions score 8.7/10 - excellent - go now.
The best time to visit County Cavan is July and August. The climate is temperate. January, February and December tend to be the least comfortable months. July is the warmest month with average highs near 67°F, while January is the coldest with lows near 35°F.
The closest major airport is Dublin Airport (DUB), about 59 mi away. Nearby highlights include Snowdonia National Park, Lake District National Park, Edinburgh Castle and Old and New Towns of Edinburgh.
In plain terms. Today is slightly warmer than average for August. The forecast high of 71°F is 5°F above the 66°F typical for this month. The best window to be outside is roughly 2 PM to 5 PM, when temperature, rain chance and wind line up best. running is the strongest bet in County Cavan today at 9.9/10. 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 Cavan
Weather map for County Cavan
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 Cavan
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 Cavan?
County Cavan is a county in Ireland. Its coordinates are 53.9908, -7.3606. It lies in Europe.
What is the weather like in County Cavan right now?
It is currently 47°F (8°C) with mainly clear. Humidity is 90% and wind is 2 mph.
When is the best time to visit County Cavan?
July and August offer the most comfortable conditions in County Cavan, which has a temperate climate. January, February and December are usually the hardest months for outdoor plans.
What time zone is County Cavan in?
County Cavan observes Europe/Dublin (UTC+01:00). The local time is 2:39 PM.
How many people live in County Cavan?
County Cavan has a population of approximately 81.000.
What is the nearest airport to County Cavan?
The closest airports are Dublin Airport (DUB), 59 mi away.
What are the top things to do in County Cavan?
Popular options include Snowdonia National Park, Lake District National Park, Edinburgh Castle, Old and New Towns of Edinburgh and Isle of Skye.
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 24, 2026 at 2:39 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
