Sea weather in Holywood in Northern Ireland All the beach weather in Holywood

All the essential weather information for enjoying the beach in Holywood in Northern 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 Holywood over the next 7 days?

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

Date Outside temp. Our opinion
Saturday 18 July 202656°F to 59°Fdiscouraged
Sunday 19 July 202652°F to 61°Fdiscouraged
Monday 20 July 202654°F to 59°Fdiscouraged
Tuesday 21 July 202654°F to 61°Fdiscouraged
Wednesday 22 July 202656°F to 59°Fdiscouraged
Thursday 23 July 202654°F to 61°Frecommended
Friday 24 July 202654°F to 67°Frecommended

Sea Weather: Your daily and hourly sea weather in Holywood

Sea weather on Saturday 18 July 2026

On Saturday 18 July 2026, the sun will rise at 05:12 and will set at 21:48 on the beach(es) of Holywood. The outside temperature will be a high of 59°F t and a low of 56°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 18.6mph km/h (with gusts up to 26.1mph). Wave height will be up to 3.9ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature13°C (55°F)13°C (55°F)13°C (56°F)15°C (59°F)13°C (56°F)15°C (59°F)14°C (57°F)14°C (56°F)
Perceived temperature11°C (52°F)11°C (51°F)11°C (52°F)13°C (56°F)11°C (52°F)14°C (56°F)13°C (55°F)13°C (56°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity87%84%86%71%70%74%80%90%
Barometric pressure1021 hPa1021 hPa1021 hPa1022 hPa1023 hPa1023 hPa1024 hPa1025 hPa
Cloud cover0%2%4%2%0%17%7%32%
Heat index13°C (55°F)13°C (55°F)13°C (56°F)15°C (59°F)13°C (56°F)15°C (59°F)14°C (57°F)14°C (56°F)
Dew point11°C (51°F)10°C (50°F)11°C (51°F)10°C (50°F)8°C (46°F)10°C (51°F)11°C (51°F)12°C (53°F)
Wind
Speed17km/h (11mph)18km/h (11mph)22km/h (14mph)30km/h (18mph)27km/h (17mph)20km/h (12mph)14km/h (9mph)6km/h (4mph)
Gusts29km/h (18mph)31km/h (19mph)34km/h (21mph)42km/h (26mph)31km/h (20mph)35km/h (22mph)29km/h (18mph)13km/h (8mph)
Direction 299°
WNW
308°
NW
319°
NW
335°
NNW
343°
NNW
353°
N
11°
N
324°
NW
Wind chill11°C (52°F)11°C (51°F)11°C (52°F)13°C (56°F)11°C (52°F)14°C (56°F)13°C (55°F)13°C (56°F)
Waves
Height0.6m (2.0ft)1.1m (3.5ft)1.2m (3.8ft)1.2m (4.1ft)1.1m (3.6ft)0.8m (2.8ft)0.7m (2.4ft)0.5m (1.7ft)
Direction 350°
N
356°
N

N

N

N

N
357°
N
358°
N
Period3.2 sec.3.2 sec.3.2 sec.3.2 sec.3.2 sec.3.2 sec.3.2 sec.3.2 sec.
Significant height0.9m (3ft)1.2m (3.9ft)1.3m (4.3ft)1.3m (4.3ft)1.1m (3.6ft)0.9m (3ft)0.8m (2.6ft)0.5m (1.6ft)
Sea water temperature
Water temperature12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)

Sea weather on Sunday 19 July 2026

On Sunday 19 July 2026, the sun will rise at 05:13 and will set at 21:46 on the beach(es) of Holywood. The outside temperature will be a high of 61°F t and a low of 52°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 13.7mph km/h (with gusts up to 24.2mph). Wave height will be up to 2.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature12°C (54°F)12°C (53°F)11°C (52°F)15°C (59°F)16°C (60°F)16°C (61°F)15°C (59°F)14°C (57°F)
Perceived temperature11°C (52°F)10°C (50°F)10°C (49°F)14°C (58°F)16°C (60°F)16°C (61°F)15°C (59°F)12°C (54°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity90%91%89%73%65%67%75%88%
Barometric pressure1025 hPa1026 hPa1026 hPa1027 hPa1028 hPa1028 hPa1028 hPa1029 hPa
Cloud cover47%22%35%18%22%21%28%39%
Heat index12°C (54°F)12°C (53°F)11°C (52°F)15°C (59°F)16°C (60°F)16°C (61°F)15°C (59°F)14°C (57°F)
Dew point11°C (51°F)10°C (50°F)10°C (49°F)10°C (50°F)9°C (49°F)10°C (50°F)11°C (51°F)12°C (54°F)
Wind
Speed13km/h (8mph)15km/h (9mph)14km/h (9mph)12km/h (7mph)21km/h (13mph)22km/h (13mph)19km/h (12mph)19km/h (12mph)
Gusts25km/h (16mph)27km/h (17mph)23km/h (14mph)16km/h (10mph)34km/h (21mph)39km/h (25mph)35km/h (22mph)33km/h (21mph)
Direction 273°
W
284°
WNW
286°
WNW
331°
NNW
351°
N
349°
NNW
339°
NNW
314°
NW
Wind chill11°C (52°F)10°C (50°F)10°C (49°F)14°C (58°F)16°C (60°F)16°C (61°F)15°C (59°F)12°C (54°F)
Waves
Height0.3m (1.0ft)0.2m (0.8ft)0.2m (0.7ft)0.2m (0.7ft)0.2m (0.8ft)0.4m (1.4ft)0.6m (1.9ft)0.7m (2.2ft)
Direction 355°
N
352°
N
352°
N
352°
N
350°
N
350°
N
355°
N
359°
N
Period3.9 sec.4.1 sec.4.2 sec.4.2 sec.4.2 sec.4.2 sec.4.2 sec.4.2 sec.
Significant height0.3m (1ft)0.3m (1ft)0.3m (1ft)0.3m (1ft)0.5m (1.6ft)0.6m (2ft)0.7m (2.3ft)0.7m (2.3ft)
Sea water temperature
Water temperature12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)

Sea weather on Monday 20 July 2026

On Monday 20 July 2026, the sun will rise at 05:15 and will set at 21:45 on the beach(es) of Holywood. The outside temperature will be a high of 59°F t and a low of 54°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 15.5mph km/h (with gusts up to 23.6mph). Wave height will be up to 2.6ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature13°C (56°F)13°C (55°F)14°C (57°F)15°C (59°F)14°C (58°F)14°C (58°F)14°C (56°F)14°C (56°F)
Perceived temperature12°C (53°F)11°C (51°F)12°C (53°F)13°C (56°F)13°C (55°F)13°C (55°F)12°C (53°F)13°C (55°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity91%90%84%81%81%79%81%89%
Barometric pressure1028 hPa1028 hPa1029 hPa1029 hPa1030 hPa1031 hPa1031 hPa1032 hPa
Cloud cover20%24%32%9%5%4%3%3%
Heat index13°C (56°F)13°C (55°F)14°C (57°F)15°C (59°F)14°C (58°F)14°C (58°F)14°C (56°F)14°C (56°F)
Dew point12°C (53°F)11°C (52°F)11°C (52°F)12°C (53°F)11°C (52°F)11°C (52°F)10°C (50°F)12°C (53°F)
Wind
Speed18km/h (11mph)22km/h (13mph)25km/h (16mph)24km/h (15mph)22km/h (14mph)19km/h (12mph)18km/h (11mph)12km/h (7mph)
Gusts30km/h (19mph)34km/h (21mph)38km/h (23mph)34km/h (21mph)37km/h (23mph)20km/h (12mph)23km/h (14mph)23km/h (14mph)
Direction 303°
WNW
314°
NW
331°
NNW
348°
NNW

N

N
350°
N
314°
NW
Wind chill12°C (53°F)11°C (51°F)12°C (53°F)13°C (56°F)13°C (55°F)13°C (55°F)12°C (53°F)13°C (55°F)
Waves
Height0.5m (1.8ft)0.5m (1.8ft)0.6m (1.9ft)0.7m (2.3ft)0.7m (2.2ft)0.7m (2.3ft)0.8m (2.7ft)0.8m (2.6ft)
Direction
N
355°
N
353°
N
353°
N
353°
N
353°
N
355°
N
359°
N
Period4.2 sec.4.2 sec.4.2 sec.4.2 sec.4.2 sec.4.2 sec.4.2 sec.4.2 sec.
Significant height0.7m (2.3ft)0.7m (2.3ft)0.8m (2.6ft)0.9m (3ft)0.8m (2.6ft)0.8m (2.6ft)1.0m (3.3ft)0.9m (3ft)
Sea water temperature
Water temperature12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)

Sea weather on Tuesday 21 July 2026

On Tuesday 21 July 2026, the sun will rise at 05:16 and will set at 21:43 on the beach(es) of Holywood. The outside temperature will be a high of 61°F t and a low of 54°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 16.8mph km/h (with gusts up to 27.3mph). Wave height will be up to 3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature12°C (54°F)13°C (55°F)14°C (56°F)16°C (60°F)16°C (61°F)16°C (61°F)14°C (58°F)13°C (56°F)
Perceived temperature11°C (52°F)11°C (52°F)12°C (54°F)16°C (60°F)16°C (61°F)16°C (61°F)12°C (54°F)11°C (52°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity93%93%90%79%71%72%80%85%
Barometric pressure1032 hPa1032 hPa1032 hPa1032 hPa1032 hPa1031 hPa1030 hPa1030 hPa
Cloud cover10%27%20%0%8%53%19%46%
Heat index12°C (54°F)13°C (55°F)14°C (56°F)16°C (60°F)16°C (61°F)16°C (61°F)14°C (58°F)13°C (56°F)
Dew point11°C (52°F)12°C (53°F)12°C (53°F)12°C (54°F)11°C (52°F)11°C (52°F)11°C (51°F)11°C (51°F)
Wind
Speed14km/h (9mph)16km/h (10mph)17km/h (11mph)20km/h (12mph)25km/h (16mph)26km/h (16mph)27km/h (17mph)27km/h (17mph)
Gusts26km/h (16mph)28km/h (17mph)27km/h (17mph)29km/h (18mph)30km/h (19mph)44km/h (27mph)30km/h (19mph)42km/h (26mph)
Direction 281°
W
289°
WNW
300°
WNW
326°
NW
336°
NNW
334°
NNW
321°
NW
312°
NW
Wind chill11°C (52°F)11°C (52°F)12°C (54°F)16°C (60°F)16°C (61°F)16°C (61°F)12°C (54°F)11°C (52°F)
Waves
Height0.6m (2.1ft)0.5m (1.5ft)0.4m (1.2ft)0.4m (1.4ft)0.6m (2.0ft)0.8m (2.5ft)0.9m (2.9ft)0.9m (2.8ft)
Direction
N
359°
N
358°
N
354°
N
355°
N
357°
N

N

N
Period4.2 sec.4.2 sec.4.2 sec.4.2 sec.4.2 sec.4.2 sec.4.2 sec.4.2 sec.
Significant height0.7m (2.3ft)0.5m (1.6ft)0.5m (1.6ft)0.7m (2.3ft)0.8m (2.6ft)0.8m (2.6ft)1.0m (3.3ft)0.9m (3ft)
Sea water temperature
Water temperature12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)

Sea weather on Wednesday 22 July 2026

On Wednesday 22 July 2026, the sun will rise at 05:18 and will set at 21:42 on the beach(es) of Holywood. The outside temperature will be a high of 59°F t and a low of 56°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 18.6mph km/h (with gusts up to 26.1mph). Wave height will be up to 3.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature13°C (56°F)14°C (56°F)14°C (57°F)15°C (59°F)14°C (57°F)15°C (59°F)14°C (58°F)13°C (55°F)
Perceived temperature11°C (52°F)11°C (53°F)12°C (53°F)15°C (59°F)12°C (53°F)15°C (59°F)12°C (54°F)11°C (52°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity87%86%90%84%72%72%75%87%
Barometric pressure1028 hPa1027 hPa1026 hPa1026 hPa1025 hPa1025 hPa1025 hPa1025 hPa
Cloud cover81%77%95%88%0%12%16%4%
Heat index13°C (56°F)14°C (56°F)14°C (57°F)15°C (59°F)14°C (57°F)15°C (59°F)14°C (58°F)13°C (55°F)
Dew point11°C (52°F)11°C (52°F)12°C (54°F)12°C (54°F)9°C (48°F)10°C (50°F)10°C (50°F)11°C (51°F)
Wind
Speed26km/h (16mph)27km/h (17mph)26km/h (16mph)28km/h (17mph)28km/h (17mph)30km/h (19mph)26km/h (16mph)19km/h (12mph)
Gusts39km/h (24mph)41km/h (26mph)38km/h (24mph)42km/h (26mph)30km/h (19mph)34km/h (21mph)33km/h (21mph)32km/h (20mph)
Direction 311°
NW
315°
NW
316°
NW
332°
NNW
347°
NNW
340°
NNW
330°
NNW
310°
NW
Wind chill11°C (52°F)11°C (53°F)12°C (53°F)15°C (59°F)12°C (53°F)15°C (59°F)12°C (54°F)11°C (52°F)
Waves
Height0.8m (2.8ft)0.8m (2.8ft)0.9m (2.9ft)0.9m (3.1ft)0.9m (3.1ft)1.0m (3.1ft)1.0m (3.2ft)0.8m (2.8ft)
Direction 356°
N
356°
N

N
360°
N
359°
N
360°
N
358°
N

N
Period4.2 sec.4.2 sec.4.2 sec.4.2 sec.4.2 sec.4.2 sec.4.2 sec.4.2 sec.
Significant height1.0m (3.3ft)1.0m (3.3ft)1.0m (3.3ft)1.0m (3.3ft)1.0m (3.3ft)1.0m (3.3ft)1.0m (3.3ft)0.9m (3ft)
Sea water temperature
Water temperature12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)

Sea weather on Thursday 23 July 2026

On Thursday 23 July 2026, the sun will rise at 05:19 and will set at 21:40 on the beach(es) of Holywood. The outside temperature will be a high of 61°F t and a low of 54°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 12.4mph km/h (with gusts up to 21.1mph). Wave height will be up to 3.3ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature12°C (53°F)12°C (53°F)12°C (54°F)15°C (59°F)15°C (60°F)16°C (61°F)16°C (61°F)15°C (58°F)
Perceived temperature10°C (50°F)10°C (50°F)11°C (52°F)15°C (59°F)15°C (60°F)16°C (61°F)16°C (61°F)14°C (57°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity91%91%89%78%80%75%72%91%
Barometric pressure1025 hPa1025 hPa1025 hPa1026 hPa1026 hPa1026 hPa1026 hPa1026 hPa
Cloud cover19%24%20%5%8%10%67%4%
Heat index12°C (53°F)12°C (53°F)12°C (54°F)15°C (59°F)15°C (60°F)16°C (61°F)16°C (61°F)15°C (58°F)
Dew point10°C (51°F)10°C (51°F)11°C (51°F)11°C (52°F)12°C (54°F)11°C (53°F)11°C (52°F)13°C (55°F)
Wind
Speed18km/h (11mph)14km/h (9mph)13km/h (8mph)14km/h (9mph)20km/h (13mph)18km/h (11mph)18km/h (11mph)12km/h (8mph)
Gusts29km/h (18mph)23km/h (15mph)20km/h (13mph)19km/h (12mph)34km/h (21mph)34km/h (21mph)34km/h (21mph)25km/h (15mph)
Direction 303°
WNW
297°
WNW
300°
WNW
341°
NNW
351°
N
358°
N
341°
NNW
336°
NNW
Wind chill10°C (50°F)10°C (50°F)11°C (52°F)15°C (59°F)15°C (60°F)16°C (61°F)16°C (61°F)14°C (57°F)
Waves
Height1.0m (3.1ft)0.9m (2.9ft)0.8m (2.8ft)0.7m (2.4ft)0.5m (1.6ft)0.4m (1.4ft)0.5m (1.6ft)0.4m (1.3ft)
Direction 358°
N

N
355°
N
357°
N
358°
N
359°
N
360°
N

N
Period4.2 sec.4.2 sec.4.2 sec.4.2 sec.4.2 sec.4.2 sec.4.2 sec.4.2 sec.
Significant height1.1m (3.6ft)1.0m (3.3ft)1.0m (3.3ft)0.7m (2.3ft)0.5m (1.6ft)0.5m (1.6ft)0.7m (2.3ft)0.4m (1.3ft)
Sea water temperature
Water temperature12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)

Sea weather on Friday 24 July 2026

On Friday 24 July 2026, the sun will rise at 05:21 and will set at 21:39 on the beach(es) of Holywood. The outside temperature will be a high of 67°F t and a low of 54°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 9.3mph km/h (with gusts up to 17.4mph). Wave height will be up to 1ft today.

0:003:006:009:0012:0015:0018:0021:00
Weather
Sky condition
Outside temperature12°C (54°F)12°C (53°F)12°C (53°F)15°C (59°F)17°C (62°F)19°C (65°F)17°C (63°F)16°C (60°F)
Perceived temperature11°C (51°F)10°C (50°F)10°C (51°F)15°C (59°F)17°C (62°F)19°C (65°F)17°C (63°F)16°C (60°F)
Precipitation0in0in0in0in0in0in0in0in
Humidity83%82%79%69%68%64%71%76%
Barometric pressure1026 hPa1025 hPa1025 hPa1024 hPa1023 hPa1021 hPa1020 hPa1019 hPa
Cloud cover0%4%35%13%15%71%26%49%
Heat index12°C (54°F)12°C (53°F)12°C (53°F)15°C (59°F)17°C (62°F)19°C (65°F)17°C (63°F)16°C (60°F)
Dew point9°C (49°F)9°C (47°F)8°C (47°F)10°C (49°F)11°C (52°F)12°C (53°F)12°C (53°F)12°C (53°F)
Wind
Speed13km/h (8mph)13km/h (8mph)14km/h (9mph)13km/h (8mph)12km/h (7mph)6km/h (4mph)9km/h (5mph)15km/h (9mph)
Gusts28km/h (17mph)28km/h (17mph)26km/h (16mph)20km/h (12mph)21km/h (13mph)12km/h (7mph)17km/h (11mph)28km/h (18mph)
Direction 292°
WNW
283°
WNW
270°
W
273°
W
296°
WNW
303°
WNW
324°
NW
271°
W
Wind chill11°C (51°F)10°C (50°F)10°C (51°F)15°C (59°F)17°C (62°F)19°C (65°F)17°C (63°F)16°C (60°F)
Waves
Height0.3m (0.9ft)0.2m (0.6ft)0.1m (0.5ft)0.1m (0.4ft)0.2m (0.7ft)0.3m (1.0ft)0.2m (0.6ft)0.1m (0.4ft)
Direction 360°
N
358°
N
358°
N
358°
N
340°
NNW
341°
NNW
352°
N
348°
NNW
Period3.4 sec.3.1 sec.2.9 sec.2.7 sec.2.7 sec.2.7 sec.2.7 sec.2.9 sec.
Significant height0.3m (1ft)0.2m (0.7ft)0.3m (1ft)0.2m (0.7ft)0.1m (0.3ft)0.2m (0.7ft)0.3m (1ft)0.1m (0.3ft)
Sea water temperature
Water temperature12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)12°C (53°F)

Sea weather chart over the next 7 days

Outside temperature

Wind speed

Precipitation

Wave height

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