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Sligo weather by month
Check out Sligo weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.
Temperature in Sligo (°C)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max temperature (daytime) | 7 |
7 |
9 |
12 |
14 |
17 |
18 |
18 |
16 |
13 |
9 |
8 |
| Min temperature (night-time) | 1 |
1 |
2 |
3 |
5 |
8 |
10 |
10 |
8 |
6 |
3 |
2 |
| Heat & Humidity | 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| Sea temperature | 8 |
8 |
8 |
9 |
11 |
13 |
15 |
16 |
15 |
13 |
11 |
10 |
Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme
Sunshine & UV index in Sligo
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daily hours of sunshine | ||||||||||||
| Daily hours of daylight | 8 |
10 |
12 |
14 |
16 |
17 |
17 |
15 |
13 |
10 |
8 |
7 |
| UV Index (Maximum) | 0 |
1 |
2 |
3 |
5 |
6 |
6 |
5 |
3 |
2 |
1 |
0 |
Rainfall in Sligo
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of days with some rain | 23 |
19 |
22 |
18 |
19 |
18 |
19 |
20 |
21 |
23 |
22 |
23 |
| Average monthly rainfall (mm) | 138 |
93 |
107 |
72 |
85 |
84 |
84 |
105 |
123 |
138 |
135 |
141 |
More about Sligo
Sligo by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for Ireland
The climate guide for Ireland (Sligo) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
What's the climate like in Sligo?
Sligo has a temperate climate with warm summers and some rainfall in all months.
Sligo weather in January
Expect daytime maximum temperatures of 7°C in Sligo, Ireland in January based on long-term weather averages. There is 1 hour of sunshine per day on average with 23 days with some rainfall and typically 138 mm of rainfall in the month.
- 7°C max day temperature
7 - 1 hour of sunshine per day
- 23 days with some rainfall
23 - 1°C min night temperature
1 - 8 hours of daylight per day
8 - No heat & humidity
0 - 138 mm of monthly rainfall
138 - No UV (Maximum) Index UV index
0 - 8°C sea temperature
8
Sligo weather in February
Expect daytime maximum temperatures of 7°C in Sligo, Ireland in February based on long-term weather averages. There are 2 hours of sunshine per day on average with 19 days with some rainfall and typically 93 mm of rainfall in the month.
- 7°C max day temperature
7 - 2 hours of sunshine per day
- 19 days with some rainfall
19 - 1°C min night temperature
1 - 10 hours of daylight per day
10 - No heat & humidity
0 - 93 mm of monthly rainfall
93 - 1 (Low) UV index
1 - 8°C sea temperature
8
Sligo weather in March
Expect daytime maximum temperatures of 9°C in Sligo, Ireland in March based on long-term weather averages. There are 3 hours of sunshine per day on average with 22 days with some rainfall and typically 107 mm of rainfall in the month.
- 9°C max day temperature
9 - 3 hours of sunshine per day
- 22 days with some rainfall
22 - 2°C min night temperature
2 - 12 hours of daylight per day
12 - No heat & humidity
0 - 107 mm of monthly rainfall
107 - 2 (Low) UV index
2 - 8°C sea temperature
8
Sligo weather in April
Expect daytime maximum temperatures of 12°C in Sligo, Ireland in April based on long-term weather averages. There are 5 hours of sunshine per day on average with 18 days with some rainfall and typically 72 mm of rainfall in the month.
- 12°C max day temperature
12 - 5 hours of sunshine per day
- 18 days with some rainfall
18 - 3°C min night temperature
3 - 14 hours of daylight per day
14 - No heat & humidity
0 - 72 mm of monthly rainfall
72 - 3 (Moderate) UV index
3 - 9°C sea temperature
9
Sligo weather in May
Expect daytime maximum temperatures of 14°C in Sligo, Ireland in May based on long-term weather averages. There are 5 hours of sunshine per day on average with 19 days with some rainfall and typically 85 mm of rainfall in the month.
- 14°C max day temperature
14 - 5 hours of sunshine per day
- 19 days with some rainfall
19 - 5°C min night temperature
5 - 16 hours of daylight per day
16 - No heat & humidity
0 - 85 mm of monthly rainfall
85 - 5 (Moderate) UV index
5 - 11°C sea temperature
11
Sligo weather in June
Expect daytime maximum temperatures of 17°C in Sligo, Ireland in June based on long-term weather averages. There are 5 hours of sunshine per day on average with 18 days with some rainfall and typically 84 mm of rainfall in the month.
- 17°C max day temperature
17 - 5 hours of sunshine per day
- 18 days with some rainfall
18 - 8°C min night temperature
8 - 17 hours of daylight per day
17 - No heat & humidity
0 - 84 mm of monthly rainfall
84 - 6 (High) UV index
6 - 13°C sea temperature
13
Sligo weather in July
Expect daytime maximum temperatures of 18°C in Sligo, Ireland in July based on long-term weather averages. There are 4 hours of sunshine per day on average with 19 days with some rainfall and typically 84 mm of rainfall in the month.
- 18°C max day temperature
18 - 4 hours of sunshine per day
- 19 days with some rainfall
19 - 10°C min night temperature
10 - 17 hours of daylight per day
17 - No heat & humidity
0 - 84 mm of monthly rainfall
84 - 6 (High) UV index
6 - 15°C sea temperature
15
Sligo weather in August
Expect daytime maximum temperatures of 18°C in Sligo, Ireland in August based on long-term weather averages. There are 4 hours of sunshine per day on average with 20 days with some rainfall and typically 105 mm of rainfall in the month.
- 18°C max day temperature
18 - 4 hours of sunshine per day
- 20 days with some rainfall
20 - 10°C min night temperature
10 - 15 hours of daylight per day
15 - No heat & humidity
0 - 105 mm of monthly rainfall
105 - 5 (Moderate) UV index
5 - 16°C sea temperature
16
Sligo weather in September
Expect daytime maximum temperatures of 16°C in Sligo, Ireland in September based on long-term weather averages. There are 3 hours of sunshine per day on average with 21 days with some rainfall and typically 123 mm of rainfall in the month.
- 16°C max day temperature
16 - 3 hours of sunshine per day
- 21 days with some rainfall
21 - 8°C min night temperature
8 - 13 hours of daylight per day
13 - No heat & humidity
0 - 123 mm of monthly rainfall
123 - 3 (Moderate) UV index
3 - 15°C sea temperature
15
Sligo weather in October
Expect daytime maximum temperatures of 13°C in Sligo, Ireland in October based on long-term weather averages. There are 2 hours of sunshine per day on average with 23 days with some rainfall and typically 138 mm of rainfall in the month.
- 13°C max day temperature
13 - 2 hours of sunshine per day
- 23 days with some rainfall
23 - 6°C min night temperature
6 - 10 hours of daylight per day
10 - No heat & humidity
0 - 138 mm of monthly rainfall
138 - 2 (Low) UV index
2 - 13°C sea temperature
13
Sligo weather in November
Expect daytime maximum temperatures of 9°C in Sligo, Ireland in November based on long-term weather averages. There are 2 hours of sunshine per day on average with 22 days with some rainfall and typically 135 mm of rainfall in the month.
- 9°C max day temperature
9 - 2 hours of sunshine per day
- 22 days with some rainfall
22 - 3°C min night temperature
3 - 8 hours of daylight per day
8 - No heat & humidity
0 - 135 mm of monthly rainfall
135 - 1 (Low) UV index
1 - 11°C sea temperature
11
Sligo weather in December
Expect daytime maximum temperatures of 8°C in Sligo, Ireland in December based on long-term weather averages. There is 1 hour of sunshine per day on average with 23 days with some rainfall and typically 141 mm of rainfall in the month.
- 8°C max day temperature
8 - 1 hour of sunshine per day
- 23 days with some rainfall
23 - 2°C min night temperature
2 - 7 hours of daylight per day
7 - No heat & humidity
0 - 141 mm of monthly rainfall
141 - No UV (Maximum) Index UV index
0 - 10°C sea temperature
10
More about Sligo
Sligo by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for Ireland
- Explore latest offers on Fred Olsen Cruises in 2026/2027
- Find last minute deals or early bird discounts
- Filter offers by price, destination, ship & departure point
The climate guide for Ireland (Sligo) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Compare Sligo weather with the UK
The weather chart below compares the average monthly maximum daytime temperature for Sligo, County Sligo, Ireland and the UK (London).
Maximum daytime temperature (°C)
Metric (°C / mm) | Imperial (°F / inches)
More about Ireland
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