Sea weather in Letterkenny in Ireland All the beach weather in Letterkenny

All the essential weather information for enjoying the beach in Letterkenny in Ireland, for swimming, tanning or water sports! Our sea weather data is reliable, easy to read and updated every day.

Weather: When should you go to the beach in Letterkenny over the next 7 days?

Discover the best moment to go to the beach in Letterkenny in Ireland this week to enjoy the best weather and calmest sea possible. Our opinion is based on reliable sea weather forecasts in Letterkenny. You can see full forecasts by clicking on the day you want to see in the table below.

Date Outside temp. Our opinion
Thursday 29 January 202641°F to 45°Fnot recommended
Friday 30 January 202640°F to 47°Fnot recommended
Saturday 31 January 202643°F to 45°Fdiscouraged
Sunday 1 February 202641°F to 45°Fdiscouraged
Monday 2 February 202640°F to 43°Fdiscouraged
Tuesday 3 February 202641°F to 47°Fdiscouraged
Wednesday 4 February 202645°F to 49°Fnot recommended

Sea Weather: Your daily and hourly sea weather in Letterkenny

Sea weather on Thursday 29 January 2026

On Thursday 29 January 2026, the sun will rise at 08:26 and will set at 17:01 on the beach(es) of Letterkenny. The outside temperature will be a high of 45°F t and a low of 41°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! Be careful, the sea will be generally rough with a wind speed of up to 31.7mph km/h (with gusts up to 42.3mph). Wave height will be up to 5.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature6°C (43°F)6°C (43°F)7°C (45°F)7°C (45°F)7°C (45°F)7°C (44°F)6°C (42°F)6°C (42°F)
Perceived temperature2°C (35°F)1°C (34°F)2°C (36°F)2°C (35°F)2°C (35°F)1°C (34°F)-0°C (32°F)-1°C (31°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity82%84%82%79%77%75%78%83%
Barometric pressure993 hPa992 hPa992 hPa991 hPa990 hPa988 hPa987 hPa986 hPa
Cloud cover4%100%100%100%93%92%100%100%
Heat index6°C (43°F)6°C (43°F)7°C (45°F)7°C (45°F)7°C (45°F)7°C (44°F)6°C (42°F)6°C (42°F)
Dew point3°C (38°F)4°C (39°F)4°C (40°F)4°C (39°F)3°C (38°F)2°C (36°F)2°C (36°F)3°C (37°F)
Wind
Speed28km/h (18mph)35km/h (22mph)39km/h (24mph)41km/h (26mph)46km/h (29mph)49km/h (30mph)48km/h (30mph)51km/h (32mph)
Gusts41km/h (25mph)50km/h (31mph)53km/h (33mph)57km/h (36mph)64km/h (40mph)53km/h (33mph)54km/h (33mph)68km/h (42mph)
Direction 121°
ESE
126°
SE
126°
SE
123°
ESE
126°
SE
124°
ESE
115°
ESE
112°
ESE
Wind chill2°C (35°F)1°C (34°F)2°C (36°F)2°C (35°F)2°C (35°F)1°C (34°F)-0°C (32°F)-1°C (31°F)
Waves
Height1.7m (5.5ft)1.6m (5.1ft)1.4m (4.8ft)1.3m (4.3ft)1.2m (4.1ft)1.2m (3.9ft)1.1m (3.8ft)1.1m (3.7ft)
Direction 293°
WNW
293°
WNW
293°
WNW
294°
WNW
291°
WNW
292°
WNW
293°
WNW
290°
WNW
Period14.8 sec.14.6 sec.14.4 sec.14.0 sec.13.3 sec.13.1 sec.12.9 sec.12.2 sec.
Significant height0.9m (3ft)1.1m (3.6ft)1.2m (3.9ft)1.2m (3.9ft)1.4m (4.6ft)1.4m (4.6ft)1.4m (4.6ft)1.6m (5.2ft)
Sea water temperature
Water temperature9°C (48°F)9°C (48°F)9°C (48°F)9°C (48°F)9°C (48°F)9°C (48°F)9°C (48°F)9°C (48°F)

Sea weather on Friday 30 January 2026

On Friday 30 January 2026, the sun will rise at 08:25 and will set at 17:04 on the beach(es) of Letterkenny. The outside temperature will be a high of 47°F t and a low of 40°F. Precipitation is in the forecast (0.1in throughout the day): choose the right time to go to the beach and dodge the raindrops. Be careful, the sea will be generally rough with a wind speed of up to 32.9mph km/h (with gusts up to 38.5mph). Wave height will be up to 9.2ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature5°C (41°F)4°C (40°F)5°C (42°F)6°C (43°F)7°C (45°F)7°C (45°F)7°C (44°F)7°C (45°F)
Perceived temperature-1°C (30°F)-2°C (29°F)-1°C (31°F)0°C (32°F)3°C (37°F)3°C (37°F)2°C (36°F)3°C (37°F)
Precipitation0in0in0in0.1in0in0in0in0in
Humidity87%96%95%91%84%79%84%85%
Barometric pressure984 hPa983 hPa980 hPa978 hPa980 hPa980 hPa983 hPa985 hPa
Cloud cover100%100%96%100%100%74%81%100%
Heat index5°C (41°F)4°C (40°F)5°C (42°F)6°C (43°F)7°C (45°F)7°C (45°F)7°C (44°F)7°C (45°F)
Dew point3°C (38°F)4°C (39°F)5°C (40°F)5°C (41°F)5°C (41°F)4°C (39°F)4°C (40°F)5°C (41°F)
Wind
Speed49km/h (30mph)45km/h (28mph)44km/h (28mph)53km/h (33mph)36km/h (22mph)31km/h (19mph)37km/h (23mph)34km/h (21mph)
Gusts62km/h (38mph)60km/h (37mph)60km/h (37mph)58km/h (36mph)50km/h (31mph)48km/h (30mph)38km/h (24mph)48km/h (30mph)
Direction 111°
ESE
117°
ESE
108°
ESE
112°
ESE
129°
SE
131°
SE
127°
SE
120°
ESE
Wind chill-1°C (30°F)-2°C (29°F)-1°C (31°F)0°C (32°F)3°C (37°F)3°C (37°F)2°C (36°F)3°C (37°F)
Waves
Height1.1m (3.6ft)1.2m (4.0ft)1.8m (6.1ft)2.6m (8.5ft)2.8m (9.1ft)2.7m (8.9ft)2.6m (8.5ft)2.4m (8.0ft)
Direction 290°
WNW
290°
WNW
290°
WNW
289°
WNW
290°
WNW
293°
WNW
294°
WNW
295°
WNW
Period12.0 sec.11.9 sec.18.3 sec.17.6 sec.17.9 sec.17.6 sec.17.3 sec.16.9 sec.
Significant height1.5m (4.9ft)1.6m (5.2ft)1.3m (4.3ft)1.4m (4.6ft)1.0m (3.3ft)0.6m (2ft)0.6m (2ft)0.5m (1.6ft)
Sea water temperature
Water temperature9°C (48°F)9°C (48°F)9°C (48°F)9°C (48°F)9°C (48°F)9°C (48°F)9°C (48°F)9°C (48°F)

Sea weather on Saturday 31 January 2026

On Saturday 31 January 2026, the sun will rise at 08:23 and will set at 17:06 on the beach(es) of Letterkenny. The outside temperature will be a high of 45°F t and a low of 43°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 17.4mph km/h (with gusts up to 23.6mph). Wave height will be up to 7.5ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature7°C (44°F)7°C (44°F)7°C (44°F)6°C (43°F)6°C (44°F)6°C (43°F)6°C (43°F)6°C (44°F)
Perceived temperature3°C (37°F)3°C (38°F)3°C (38°F)2°C (36°F)3°C (37°F)3°C (37°F)3°C (38°F)3°C (38°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity85%89%87%91%86%87%87%87%
Barometric pressure987 hPa989 hPa990 hPa992 hPa993 hPa992 hPa993 hPa992 hPa
Cloud cover68%100%100%100%100%100%79%100%
Heat index7°C (44°F)7°C (44°F)7°C (44°F)6°C (43°F)6°C (44°F)6°C (43°F)6°C (43°F)6°C (44°F)
Dew point5°C (40°F)5°C (41°F)5°C (40°F)5°C (41°F)4°C (40°F)4°C (40°F)4°C (40°F)4°C (40°F)
Wind
Speed28km/h (17mph)21km/h (13mph)18km/h (11mph)25km/h (15mph)22km/h (14mph)19km/h (12mph)15km/h (10mph)17km/h (11mph)
Gusts38km/h (24mph)28km/h (17mph)24km/h (15mph)34km/h (21mph)32km/h (20mph)28km/h (18mph)24km/h (15mph)25km/h (16mph)
Direction 112°
ESE
98°
E
112°
ESE
106°
ESE
119°
ESE
114°
ESE
139°
SE
151°
SSE
Wind chill3°C (37°F)3°C (38°F)3°C (38°F)2°C (36°F)3°C (37°F)3°C (37°F)3°C (38°F)3°C (38°F)
Waves
Height2.3m (7.6ft)2.2m (7.3ft)2.2m (7.1ft)2.1m (6.9ft)2.1m (6.9ft)2.2m (7.2ft)2.2m (7.1ft)2.1m (6.8ft)
Direction 294°
WNW
295°
WNW
295°
WNW
292°
WNW
292°
WNW
291°
WNW
292°
WNW
293°
WNW
Period16.1 sec.15.8 sec.15.4 sec.15.0 sec.15.2 sec.14.9 sec.14.6 sec.14.4 sec.
Significant height0.5m (1.6ft)0.5m (1.6ft)0.7m (2.3ft)0.7m (2.3ft)0.8m (2.6ft)0.8m (2.6ft)1.0m (3.3ft)1.1m (3.6ft)
Sea water temperature
Water temperature9°C (48°F)9°C (48°F)9°C (48°F)9°C (48°F)9°C (48°F)9°C (48°F)9°C (48°F)9°C (48°F)

Sea weather on Sunday 1 February 2026

On Sunday 1 February 2026, the sun will rise at 08:21 and will set at 17:08 on the beach(es) of Letterkenny. The outside temperature will be a high of 45°F t and a low of 41°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 14.9mph km/h (with gusts up to 22.4mph). Wave height will be up to 12.5ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature7°C (44°F)6°C (43°F)7°C (44°F)6°C (43°F)7°C (45°F)7°C (44°F)5°C (42°F)5°C (41°F)
Perceived temperature3°C (38°F)3°C (37°F)3°C (38°F)3°C (38°F)3°C (38°F)5°C (41°F)3°C (37°F)2°C (36°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity88%93%89%82%80%74%80%84%
Barometric pressure992 hPa992 hPa991 hPa992 hPa993 hPa993 hPa993 hPa993 hPa
Cloud cover100%100%100%100%62%88%11%30%
Heat index7°C (44°F)6°C (43°F)7°C (44°F)6°C (43°F)7°C (45°F)7°C (44°F)5°C (42°F)5°C (41°F)
Dew point5°C (40°F)5°C (41°F)5°C (41°F)3°C (38°F)4°C (39°F)3°C (37°F)2°C (36°F)3°C (37°F)
Wind
Speed18km/h (11mph)16km/h (10mph)20km/h (13mph)15km/h (10mph)24km/h (15mph)10km/h (6mph)13km/h (8mph)14km/h (9mph)
Gusts27km/h (16mph)24km/h (15mph)28km/h (17mph)22km/h (13mph)36km/h (22mph)18km/h (11mph)25km/h (16mph)23km/h (14mph)
Direction 158°
SSE
171°
S
181°
S
229°
SW
274°
W
251°
WSW
198°
SSW
154°
SSE
Wind chill3°C (38°F)3°C (37°F)3°C (38°F)3°C (38°F)3°C (38°F)5°C (41°F)3°C (37°F)2°C (36°F)
Waves
Height1.9m (6.4ft)1.8m (5.9ft)1.7m (5.7ft)1.8m (5.9ft)2.8m (9.2ft)3.8m (12.5ft)3.7m (12.1ft)3.4m (11.2ft)
Direction 294°
WNW
294°
WNW
292°
WNW
293°
WNW
293°
WNW
294°
WNW
294°
WNW
294°
WNW
Period14.3 sec.14.1 sec.13.9 sec.13.7 sec.18.9 sec.17.6 sec.17.3 sec.16.2 sec.
Significant height0.9m (3ft)0.9m (3ft)0.7m (2.3ft)0.7m (2.3ft)1.0m (3.3ft)1.0m (3.3ft)0.8m (2.6ft)1.0m (3.3ft)
Sea water temperature
Water temperature9°C (48°F)9°C (48°F)9°C (48°F)9°C (48°F)9°C (48°F)9°C (48°F)9°C (48°F)9°C (48°F)

Sea weather on Monday 2 February 2026

On Monday 2 February 2026, the sun will rise at 08:19 and will set at 17:10 on the beach(es) of Letterkenny. The outside temperature will be a high of 43°F t and a low of 40°F. Precipitation is in the forecast (0.1in throughout the day): choose the right time to go to the beach and dodge the raindrops. The sea will be generally calm, with a wind speed of up to 18.6mph km/h (with gusts up to 25.5mph). Wave height will be up to 10.5ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature5°C (41°F)4°C (40°F)4°C (39°F)5°C (40°F)6°C (42°F)6°C (42°F)5°C (41°F)6°C (43°F)
Perceived temperature2°C (35°F)1°C (33°F)0°C (32°F)0°C (33°F)1°C (34°F)1°C (34°F)1°C (33°F)3°C (38°F)
Precipitation0in0in0in0in0in0in0in0.1in
Humidity83%82%84%87%81%80%87%92%
Barometric pressure991 hPa990 hPa989 hPa988 hPa987 hPa985 hPa984 hPa982 hPa
Cloud cover13%12%13%50%89%100%100%100%
Heat index5°C (41°F)4°C (40°F)4°C (39°F)5°C (40°F)6°C (42°F)6°C (42°F)5°C (41°F)6°C (43°F)
Dew point2°C (36°F)2°C (35°F)2°C (35°F)2°C (36°F)3°C (37°F)3°C (37°F)3°C (37°F)5°C (41°F)
Wind
Speed14km/h (9mph)16km/h (10mph)18km/h (11mph)21km/h (13mph)29km/h (18mph)30km/h (18mph)24km/h (15mph)14km/h (9mph)
Gusts23km/h (14mph)25km/h (15mph)28km/h (17mph)30km/h (19mph)39km/h (24mph)41km/h (26mph)34km/h (21mph)20km/h (12mph)
Direction 127°
SE
141°
SE
123°
ESE
117°
ESE
106°
ESE
102°
ESE
99°
E
90°
E
Wind chill2°C (35°F)1°C (33°F)0°C (32°F)0°C (33°F)1°C (34°F)1°C (34°F)1°C (33°F)3°C (38°F)
Waves
Height3.2m (10.5ft)3.0m (9.8ft)2.7m (9.0ft)2.5m (8.1ft)2.2m (7.3ft)2.0m (6.7ft)1.9m (6.3ft)1.8m (6.1ft)
Direction 294°
WNW
295°
WNW
293°
WNW
294°
WNW
291°
WNW
292°
WNW
292°
WNW
288°
WNW
Period15.8 sec.15.6 sec.14.7 sec.14.4 sec.14.0 sec.13.4 sec.13.1 sec.12.5 sec.
Significant height1.5m (4.9ft)2.0m (6.6ft)1.0m (3.3ft)0.4m (1.3ft)0.5m (1.6ft)0.4m (1.3ft)0.5m (1.6ft)0.6m (2ft)
Sea water temperature
Water temperature9°C (48°F)9°C (48°F)9°C (48°F)9°C (48°F)9°C (48°F)9°C (48°F)9°C (48°F)9°C (48°F)

Sea weather on Tuesday 3 February 2026

On Tuesday 3 February 2026, the sun will rise at 08:17 and will set at 17:12 on the beach(es) of Letterkenny. The outside temperature will be a high of 47°F t and a low of 41°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! The sea will be generally calm, with a wind speed of up to 19.3mph km/h (with gusts up to 29.2mph). Wave height will be up to 5.9ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature6°C (42°F)6°C (42°F)5°C (40°F)5°C (41°F)6°C (43°F)8°C (46°F)7°C (45°F)7°C (44°F)
Perceived temperature2°C (36°F)3°C (38°F)1°C (34°F)0°C (32°F)2°C (36°F)4°C (39°F)3°C (37°F)2°C (36°F)
Precipitation0.1in0in0in0in0in0in0in0in
Humidity90%89%91%90%85%81%85%83%
Barometric pressure981 hPa982 hPa983 hPa985 hPa985 hPa985 hPa986 hPa987 hPa
Cloud cover100%86%50%83%38%81%63%81%
Heat index6°C (42°F)6°C (42°F)5°C (40°F)5°C (41°F)6°C (43°F)8°C (46°F)7°C (45°F)7°C (44°F)
Dew point4°C (40°F)4°C (39°F)3°C (38°F)3°C (38°F)4°C (39°F)5°C (41°F)5°C (41°F)4°C (39°F)
Wind
Speed16km/h (10mph)11km/h (7mph)16km/h (10mph)25km/h (16mph)27km/h (17mph)27km/h (17mph)30km/h (19mph)31km/h (19mph)
Gusts22km/h (13mph)15km/h (9mph)23km/h (14mph)34km/h (21mph)38km/h (24mph)40km/h (25mph)47km/h (29mph)45km/h (28mph)
Direction 131°
SE
178°
S
161°
SSE
158°
SSE
156°
SSE
158°
SSE
149°
SSE
147°
SSE
Wind chill2°C (36°F)3°C (38°F)1°C (34°F)0°C (32°F)2°C (36°F)4°C (39°F)3°C (37°F)2°C (36°F)
Waves
Height1.8m (5.8ft)1.7m (5.6ft)1.7m (5.7ft)1.8m (5.8ft)1.7m (5.7ft)1.7m (5.5ft)1.7m (5.6ft)1.8m (5.8ft)
Direction 288°
WNW
289°
WNW
291°
WNW
291°
WNW
291°
WNW
292°
WNW
293°
WNW
293°
WNW
Period12.2 sec.12.2 sec.13.6 sec.13.3 sec.13.2 sec.13.2 sec.13.4 sec.13.2 sec.
Significant height0.5m (1.6ft)0.2m (0.7ft)0.2m (0.7ft)0.3m (1ft)0.3m (1ft)0.4m (1.3ft)0.5m (1.6ft)0.6m (2ft)
Sea water temperature
Water temperature9°C (48°F)9°C (48°F)9°C (48°F)9°C (48°F)9°C (48°F)9°C (48°F)9°C (48°F)9°C (48°F)

Sea weather on Wednesday 4 February 2026

On Wednesday 4 February 2026, the sun will rise at 08:16 and will set at 17:14 on the beach(es) of Letterkenny. The outside temperature will be a high of 49°F t and a low of 45°F. There will be little to no precipitation today, so unless you go swimming, you can enjoy the beach and stay dry! Be careful, the sea will be generally rough with a wind speed of up to 25.5mph km/h (with gusts up to 34.2mph). Wave height will be up to 5.9ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature7°C (44°F)7°C (45°F)7°C (45°F)8°C (46°F)8°C (47°F)9°C (48°F)7°C (45°F)7°C (45°F)
Perceived temperature2°C (36°F)3°C (37°F)2°C (35°F)3°C (37°F)4°C (39°F)5°C (41°F)4°C (39°F)3°C (38°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity86%84%86%82%80%78%83%89%
Barometric pressure986 hPa984 hPa982 hPa982 hPa983 hPa983 hPa984 hPa985 hPa
Cloud cover39%63%100%93%100%100%100%100%
Heat index7°C (44°F)7°C (45°F)7°C (45°F)8°C (46°F)8°C (47°F)9°C (48°F)7°C (45°F)7°C (45°F)
Dew point5°C (40°F)5°C (40°F)5°C (41°F)5°C (41°F)5°C (41°F)5°C (41°F)5°C (40°F)6°C (42°F)
Wind
Speed33km/h (20mph)38km/h (23mph)41km/h (25mph)36km/h (23mph)31km/h (19mph)31km/h (19mph)24km/h (15mph)25km/h (16mph)
Gusts46km/h (29mph)53km/h (33mph)55km/h (34mph)51km/h (31mph)45km/h (28mph)46km/h (28mph)37km/h (23mph)35km/h (22mph)
Direction 138°
SE
131°
SE
135°
SE
149°
SSE
148°
SSE
145°
SE
131°
SE
139°
SE
Wind chill2°C (36°F)3°C (37°F)2°C (35°F)3°C (37°F)4°C (39°F)5°C (41°F)4°C (39°F)3°C (38°F)
Waves
Height1.8m (6.0ft)1.8m (6.0ft)1.7m (5.7ft)1.6m (5.4ft)1.5m (5.1ft)1.4m (4.7ft)1.3m (4.3ft)1.2m (3.9ft)
Direction 293°
WNW
293°
WNW
294°
WNW
294°
WNW
294°
WNW
296°
WNW
296°
WNW
296°
WNW
Period13.1 sec.13.0 sec.12.6 sec.12.3 sec.12.3 sec.12.1 sec.11.9 sec.11.6 sec.
Significant height0.5m (1.6ft)0.4m (1.3ft)0.4m (1.3ft)0.5m (1.6ft)0.6m (2ft)0.7m (2.3ft)0.8m (2.6ft)1.0m (3.3ft)
Sea water temperature
Water temperature7°C (44°F)7°C (44°F)7°C (44°F)7°C (44°F)7°C (44°F)7°C (44°F)7°C (44°F)7°C (44°F)

Sea weather chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

Change units