Ballymena weather by month

Check out Ballymena weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature
Rainfall
Sunshine & daylight
UV levels & humidity

Temperature in Ballymena (°F)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Max temperature (daytime)	43	43	46	50	55	61	63	63	59	54	46	45
Min temperature (night-time)	34	34	34	37	41	46	50	50	46	43	37	34
Heat & Humidity	0	0	0	0	0	0	0	0	0	0	0	0

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & Daylight in Ballymena

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Daily hours of sunshine	1	2	3	5	6	6	5	4	3	3	2	1
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 Ballymena

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Number of days with some rain	21	17	20	16	17	16	17	19	19	20	20	20
Average monthly rainfall (inches)	4.3	2.9	3.4	2.6	2.7	2.9	2.9	3.8	4.1	4.5	4.2	4.0

More about Ballymena

Ballymena by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Northern Ireland

Fred Olsen: Top cruise offers for 2026/2027

Sale

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

Go to Fred Olsen deal >>

View all Fred Olsen offers

Cruise deal finder

Destination

The climate guide for Northern Ireland (Ballymena) 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 Ballymena?

Ballymena has a temperate climate with warm summers and some rainfall in all months.

Ballymena weather in January

Expect daytime maximum temperatures of 43°F in Ballymena, Northern Ireland in January based on long-term weather averages. There is 1 hour of sunshine per day on average with 21 days with some rainfall and typically 4.3 inches of rainfall in the month.

43
43°F max day temperature
1
1 hour of sunshine per day
21
21 days with some rainfall
34
34°F min night temperature
8
8 hours of daylight per day
0
No heat & humidity
4.3
4.3 inches of monthly rainfall
0
No UV (Maximum) Index UV index

Back to months

Ballymena weather in February

Expect daytime maximum temperatures of 43°F in Ballymena, Northern Ireland in February based on long-term weather averages. There are 2 hours of sunshine per day on average with 17 days with some rainfall and typically 2.9 inches of rainfall in the month.

43
43°F max day temperature
2
2 hours of sunshine per day
17
17 days with some rainfall
34
34°F min night temperature
10
10 hours of daylight per day
0
No heat & humidity
2.9
2.9 inches of monthly rainfall
1
1 (Low) UV index

Back to months

Ballymena weather in March

Expect daytime maximum temperatures of 46°F in Ballymena, Northern Ireland in March based on long-term weather averages. There are 3 hours of sunshine per day on average with 20 days with some rainfall and typically 3.4 inches of rainfall in the month.

46
46°F max day temperature
3
3 hours of sunshine per day
20
20 days with some rainfall
34
34°F min night temperature
12
12 hours of daylight per day
0
No heat & humidity
3.4
3.4 inches of monthly rainfall
2
2 (Low) UV index

Back to months

Ballymena weather in April

Expect daytime maximum temperatures of 50°F in Ballymena, Northern Ireland in April based on long-term weather averages. There are 5 hours of sunshine per day on average with 16 days with some rainfall and typically 2.6 inches of rainfall in the month.

50
50°F max day temperature
5
5 hours of sunshine per day
16
16 days with some rainfall
37
37°F min night temperature
14
14 hours of daylight per day
0
No heat & humidity
2.6
2.6 inches of monthly rainfall
3
3 (Moderate) UV index

Back to months

Ballymena weather in May

Expect daytime maximum temperatures of 55°F in Ballymena, Northern Ireland in May based on long-term weather averages. There are 6 hours of sunshine per day on average with 17 days with some rainfall and typically 2.7 inches of rainfall in the month.

55
55°F max day temperature
6
6 hours of sunshine per day
17
17 days with some rainfall
41
41°F min night temperature
16
16 hours of daylight per day
0
No heat & humidity
2.7
2.7 inches of monthly rainfall
5
5 (Moderate) UV index

Back to months

Ballymena weather in June

Expect daytime maximum temperatures of 61°F in Ballymena, Northern Ireland in June based on long-term weather averages. There are 6 hours of sunshine per day on average with 16 days with some rainfall and typically 2.9 inches of rainfall in the month.

61
61°F max day temperature
6
6 hours of sunshine per day
16
16 days with some rainfall
46
46°F min night temperature
17
17 hours of daylight per day
0
No heat & humidity
2.9
2.9 inches of monthly rainfall
6
6 (High) UV index

Back to months

Ballymena weather in July

Expect daytime maximum temperatures of 63°F in Ballymena, Northern Ireland in July based on long-term weather averages. There are 5 hours of sunshine per day on average with 17 days with some rainfall and typically 2.9 inches of rainfall in the month.

63
63°F max day temperature
5
5 hours of sunshine per day
17
17 days with some rainfall
50
50°F min night temperature
17
17 hours of daylight per day
0
No heat & humidity
2.9
2.9 inches of monthly rainfall
6
6 (High) UV index

Back to months

Ballymena weather in August

Expect daytime maximum temperatures of 63°F in Ballymena, Northern Ireland in August based on long-term weather averages. There are 4 hours of sunshine per day on average with 19 days with some rainfall and typically 3.8 inches of rainfall in the month.

63
63°F max day temperature
4
4 hours of sunshine per day
19
19 days with some rainfall
50
50°F min night temperature
15
15 hours of daylight per day
0
No heat & humidity
3.8
3.8 inches of monthly rainfall
5
5 (Moderate) UV index

Back to months

Ballymena weather in September

Expect daytime maximum temperatures of 59°F in Ballymena, Northern Ireland in September based on long-term weather averages. There are 3 hours of sunshine per day on average with 19 days with some rainfall and typically 4.1 inches of rainfall in the month.

59
59°F max day temperature
3
3 hours of sunshine per day
19
19 days with some rainfall
46
46°F min night temperature
13
13 hours of daylight per day
0
No heat & humidity
4.1
4.1 inches of monthly rainfall
3
3 (Moderate) UV index

Back to months

Ballymena weather in October

Expect daytime maximum temperatures of 54°F in Ballymena, Northern Ireland in October based on long-term weather averages. There are 3 hours of sunshine per day on average with 20 days with some rainfall and typically 4.5 inches of rainfall in the month.

54
54°F max day temperature
3
3 hours of sunshine per day
20
20 days with some rainfall
43
43°F min night temperature
10
10 hours of daylight per day
0
No heat & humidity
4.5
4.5 inches of monthly rainfall
2
2 (Low) UV index

Back to months

Ballymena weather in November

Expect daytime maximum temperatures of 46°F in Ballymena, Northern Ireland in November based on long-term weather averages. There are 2 hours of sunshine per day on average with 20 days with some rainfall and typically 4.2 inches of rainfall in the month.

46
46°F max day temperature
2
2 hours of sunshine per day
20
20 days with some rainfall
37
37°F min night temperature
8
8 hours of daylight per day
0
No heat & humidity
4.2
4.2 inches of monthly rainfall
1
1 (Low) UV index

Back to months

Ballymena weather in December

Expect daytime maximum temperatures of 45°F in Ballymena, Northern Ireland in December based on long-term weather averages. There is 1 hour of sunshine per day on average with 20 days with some rainfall and typically 4.0 inches of rainfall in the month.