AI-generatedCastlebar at a glance
- Best time
- May – Jul, Sep
- Warmest month
- Jul · 19°
- Sunshine a year
- 1,350 h
- Rain a year
- 1,121 mm
- Climate
- Maritime
- Time zone
- UTC+0 / UTC+1
- Elevation
- 48 m
Climate in Castlebar
Castlebar has a maritime climate with moderate summers and cool, often grey winters. July is the warmest month with average highs of 19 °C, while January is the coolest at 9 °C. With around 1,350 hours of sunshine a year, Castlebar is rather dull; May is the sunniest month with 6.1 hours a day.
Holiday weather through the year
Best time to visit Castlebar
The best time to visit Castlebar is from May to July and in September. The wettest month is December with 115 mm of precipitation.
Castlebar through the seasons
How the weather changes over the seasons, with averages for each.
Castlebar in spring
Mar – May
Fair
- 11–16 °C by day
- 4.9 h of sun a day
- 42 rainy days in all
Castlebar in summer
Jun – Aug
Good
- 18–19 °C by day
- 5.0 h of sun a day
- 47 rainy days in all
Castlebar in autumn
Sep – Nov
Poor
- 11–17 °C by day
- 3.0 h of sun a day
- 47 rainy days in all
Castlebar in winter
Dec – Feb
Poor
- 9 °C by day
- 1.9 h of sun a day
- 48 rainy days in all
Which month for what?
Beach & swimming
No sea nearby
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
No month
15–28 °C and not too much rain
Rainy months
All year
Rainy season or more than 12 rainy days
Find your perfect month
Tell us what you like and we rate every month in Castlebar for you.
Your best months: June – August
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Poor
Best time to visit: May – July, September
Keep in mindFrequent rain
A typical day in October
- Morning, 08:00: about 8°
- Midday, 13:00: about 13°
- Afternoon, 16:00: about 14°
- Evening, 20:00: about 11°
- Night, 23:00: about 10°
08:0318:43
Cold evenings: bring a warm jacket.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 07:41–08:51 · evening 17:54–19:05
- Blue hour
- Morning 07:27–07:41 · evening 19:05–19:19
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
October in Castlebar compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs fall from about 15° at the start of the month to 12° at the end. The days get 2.0 h shorter.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 15° | 12° |
| Night-time low | 9° | 6° |
| Daylight | 11.7 h | 9.6 h |
What is the weather like in Castlebar in October?
In October, Castlebar is cool: daytime highs average 14 °C, and nights cool down to about 8 °C. The sun is scarce, with only about 3.1 hours a day. It rains often – on about 17 days, adding up to 113 mm. All in all, October is not an ideal month for a holiday in Castlebar.
More details for October
- Daylight
- 10 h 40 min08:03 – 18:43
- UV index
- 2 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 22 km/haverage daily peakAll months
- Cloud cover
- 78 %on averageAll months
- Hot days
- 0 days30 °C or more
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC+1offset from UTC
How the score comes together
- Temperatureweight 50 %64 %
- Sunshineweight 20 %2 %
- Few rainy daysweight 30 %6 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Nature escape”.
What to pack in October
- A jumper for the evenings
- Rain jacket or umbrella
Compare two months in Castlebar
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
June has the better holiday weather in Castlebar: score 66 against 34. In June, days are 4 °C warmer than in October. June has 2 fewer rainy days. The sun shines 2 hours longer a day in June.
| Month | October | June |
|---|---|---|
| Holiday weather score | 34 | 66better |
| Daytime high | 14° | 18° |
| Night-time low | 8° | 10° |
| Sunshine | 3.1 h | 5.6 hbetter |
| Rainy days | 17 | 15better |
| Rainfall | 113 mm | 83 mmbetter |
Based on the climate averages 1996–2025.
Castlebar month by month
The typical weather for every month at a glance.
7January9° · 1.7 h
In January, Castlebar is cold: daytime highs average 9 °C, and nights cool down to about 3 °C. The sun is scarce, with only about 1.7 hours a day. It rains often – on about 16 days, adding up to 102 mm. All in all, January is not an ideal month for a holiday in Castlebar.
Castlebar in January13February9° · 2.5 h
In February, Castlebar is cold: daytime highs average 9 °C, and nights cool down to about 3 °C. The sun is scarce, with only about 2.5 hours a day. It rains often – on about 15 days, adding up to 94 mm. All in all, February is not an ideal month for a holiday in Castlebar.
Castlebar in February24March11° · 3.4 h
In March, Castlebar is cool: daytime highs average 11 °C, and nights cool down to about 4 °C. The sun is scarce, with only about 3.4 hours a day. It rains often – on about 14 days, adding up to 81 mm. All in all, March is not an ideal month for a holiday in Castlebar.
Castlebar in March46April13° · 5.3 h
In April, Castlebar is cool: daytime highs average 13 °C, and nights cool down to about 5 °C. Expect around 5.3 hours of sunshine a day. Rain is frequent, with about 14 rainy days and 71 mm in total. All in all, April is a so-so month for a holiday in Castlebar.
Castlebar in April60May16° · 6.1 h
In May, Castlebar is cool: daytime highs average 16 °C, and nights cool down to about 8 °C. Expect around 6.1 hours of sunshine a day. It rains often – on about 15 days, adding up to 82 mm. All in all, May is a good month for a holiday in Castlebar.
Castlebar in May66June18° · 5.6 h
In June, Castlebar is mild: daytime highs average 18 °C, and nights cool down to about 10 °C. Expect around 5.6 hours of sunshine a day. It rains often – on about 15 days, adding up to 83 mm. All in all, June is a good month for a holiday in Castlebar.
Castlebar in June60July19° · 4.6 h
In July, Castlebar is mild: daytime highs average 19 °C, and nights cool down to about 12 °C. Expect around 4.6 hours of sunshine a day. It rains often – on about 16 days, adding up to 88 mm. All in all, July is a good month for a holiday in Castlebar.
Castlebar in July59August19° · 4.8 h
In August, Castlebar is mild: daytime highs average 19 °C, and nights cool down to about 12 °C. Expect around 4.8 hours of sunshine a day. It rains often – on about 17 days, adding up to 96 mm. All in all, August is a so-so month for a holiday in Castlebar.
Castlebar in August62September17° · 3.9 h
In September, Castlebar is mild: daytime highs average 17 °C, and nights cool down to about 10 °C. The sun is scarce, with only about 3.9 hours a day. Rain is frequent, with about 14 rainy days and 84 mm in total. All in all, September is a good month for a holiday in Castlebar.
Castlebar in September34October14° · 3.1 h
In October, Castlebar is cool: daytime highs average 14 °C, and nights cool down to about 8 °C. The sun is scarce, with only about 3.1 hours a day. It rains often – on about 17 days, adding up to 113 mm. All in all, October is not an ideal month for a holiday in Castlebar.
Castlebar in October19November11° · 1.9 h
In November, Castlebar is cool: daytime highs average 11 °C, and nights cool down to about 5 °C. The sun is scarce, with only about 1.9 hours a day. It rains often – on about 17 days, adding up to 111 mm. All in all, November is not an ideal month for a holiday in Castlebar.
Castlebar in November7December9° · 1.4 h
In December, Castlebar is cold: daytime highs average 9 °C, and nights cool down to about 3 °C. The sun is scarce, with only about 1.4 hours a day. It rains often – on about 17 days, adding up to 115 mm. All in all, December is not an ideal month for a holiday in Castlebar.
Castlebar in DecemberClimate in detail
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Castlebar
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Cold 0–8°
- Cool 8–15°
CoolOctober: nights around 8°. A duvet at night and a jumper for the evening.
The coolest nights are in January (3°), the warmest in July (12°). Nights fall below 8 °C on average from November to April, so the room should be heated.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|
| JanuaryJan | 7 | 9° | 3° | 1.7 h | 16 | 102 |
| FebruaryFeb | 13 | 9° | 3° | 2.5 h | 15 | 94 |
| MarchMar | 24 | 11° | 4° | 3.4 h | 14 | 81 |
| AprilApr | 46 | 13° | 5° | 5.3 h | 14 | 71 |
| MayMay | 60 | 16° | 8° | 6.1 h | 15 | 82 |
| JuneJun | 66 | 18° | 10° | 5.6 h | 15 | 83 |
| JulyJul | 60 | 19° | 12° | 4.6 h | 16 | 88 |
| AugustAug | 59 | 19° | 12° | 4.8 h | 17 | 96 |
| SeptemberSep | 62 | 17° | 10° | 3.9 h | 14 | 84 |
| OctoberOct | 34 | 14° | 8° | 3.1 h | 17 | 113 |
| NovemberNov | 19 | 11° | 5° | 1.9 h | 17 | 111 |
| DecemberDec | 7 | 9° | 3° | 1.4 h | 17 | 115 |
Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
53.85° N, 9.30° W · 48 m · Europe/Dublin
Sunshine hours in Castlebar
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 3.1 of 10.7 hours of daylight in Castlebar, 29 % of the daylight hours.
Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.
Rain in Castlebar: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Castlebar has about 17 rainy days with 113 mm of rain in total.
UV index in Castlebar
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 2 · lowLittle protection needed; sunglasses on bright days.
The sun is strongest in June (UV 7).
Minutes until sunburn in October
- Very fair skin
- about 85 min
- Fair skin
- about 105 min
- Light brown skin
- over 2 h
- Olive skin
- over 2 h
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen the time, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Wind and clouds in Castlebar
How breezy and how cloudy Castlebar is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Castlebar typically peaks at 22 km/h during the day: Beaufort 4, moderate breeze.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 78 % of the sky over Castlebar: mostly cloudy, with about 3.1 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Planning a trip to Castlebar
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Castlebar in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Castlebar has its best school-holiday weather during May half-term (score 61) and its weakest during the Christmas holidays (score 7).
- 39
Easter holidays
Mar – Apr
Poor
- 12 °C by day
- 4.7 h of sun a day
- 14 rainy days a month
Keep in mind: Frequent rain
- 61
May half-term
May – Jun
GoodBest holidays
- 16 °C by day
- 6.0 h of sun a day
- 15 rainy days a month
Keep in mind: Frequent rain
- 59
Summer holidays
Jul – Aug
Fair
- 19 °C by day
- 4.7 h of sun a day
- 16 rainy days a month
Keep in mind: Frequent rain
- 34
October half-term
Oct
Poor
- 14 °C by day
- 3.1 h of sun a day
- 17 rainy days a month
Keep in mind: Frequent rain
- 7
Christmas holidays
Dec – Jan
Poor
- 9 °C by day
- 1.5 h of sun a day
- 17 rainy days a month
Keep in mind: Frequent rain
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 1 h 15 min
- Distance
- 650 km
- Time zone
- UTC+1
- Jet lag
- Hardly any (under 3 h)
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Compare & alternatives
Castlebar compared
Put Castlebar side by side with another destination.
Castlebar vs Westport
In October the holiday weather in Castlebar and Westport is about equally good (score 34 vs 35). During the day it is about as warm in Westport as in Castlebar.
| in October | Castlebar | Westport |
|---|---|---|
| Holiday weather score | 34 | 35 |
| Daytime high | 14° | 14° |
| Sea | no sea nearby | 14° |
| Sunshine | 3 h | 3 h |
| Rainy days | 17 | 18 |
| Best time | May – Jul, Sep | May – Jun, Sep |
Through the year
Ireland in October: the best places
In October, Castlebar ranks 20 among the 31 nearest destinations in this country.
- Tullamore14°42
- 2Adare14°41
- 3Thurles14°41
- 4Athenry14°40
- 5Ballymahon14°40
- 6Tipperary14°40
- 7Tuam14°39
- 8Roscommon14°39
- 20CastlebarThis page14°34
Near Castlebar
Other destinations close by.
Places with a climate like Castlebar
Destinations whose weather through the year is closest to Castlebar's – good alternatives.
Frequently asked questions about Castlebar
When is the best time to visit Castlebar?
The best time to visit Castlebar is from May to July and in September. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
What is the warmest month in Castlebar?
July is the warmest month, with average highs of 19 °C and nights around 12 °C. January is the coolest month at 9 °C.
When does it rain most in Castlebar?
The wettest month is December with 115 mm of precipitation. The driest month is April with 71 mm.
How many hours of sunshine does Castlebar get?
Castlebar gets around 1,350 hours of sunshine a year. The sunniest month is May with 6.1 hours a day; in December there are 1.4 hours a day.
What time zone is Castlebar in?
Castlebar is on UTC+0 in January and UTC+1 in July.
How long is the flight from London to Castlebar?
A nonstop flight from London to Castlebar takes about 1 h 15 min, for a straight-line distance of about 650 km.
Which school holidays are best for Castlebar?
Castlebar has its best school-holiday weather during May half-term (score 61) and its weakest during the Christmas holidays (score 7). Holiday ratings (0–100): Easter holidays 39, May half-term 61, summer holidays 59, October half-term 34, Christmas holidays 7.