Portstewart Water Temperature

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Portstewart is a town close to Sea of the Hebrides. September is the month with the highest water temperature at 57.4°F / 14.1°C.
The coldest month is March with an average water temperature of 45.3°F / 7.4°C.
May is the driest at 2in / 50.9mm and November the wettest month with 4.9in / 125.1mm.
With an average air temperature of 57°F / 13.9°C, July is the warmest month in a year. January is the coldest with 40.1°F / 4.5°C average air temperature.
The Climate is described as temperate oceanic climate with warm summer. Best time to Visit would be in June, July, August, September.

Portstewart Summary

Description	Value
Current water temperature	/
Warmest Month Water Temperature:	September with 14.1°C / 57.4°F
Coldest Month Water Temperature:	March with 7.4°C / 45.3°F
Warmest Month Air Temperature:	July with 13.9°C / 57°F
Coldest Month Air Temperature:	January with 4.5°C / 40.1°F
Wettest Month:	November with 125.1mm / 4.9in
Driest Month:	May with 50.9mm / 2in
Highest Humidity	December with 85.9%
Lowest Humidity	May with 78.3%
Best Time to Visit:	June, July, August, September
Climate Classification	temperate oceanic climate with warm summer

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Portstewart water temperature by month

°C

Sea of the Hebrides water temperature by month

	Max. Water Temperature (°C)	ø. Water Temperature (°C)	Min. Water Temperature (°C)
January	9.1	8.5	8
February	8	7.7	7.4
March	7.6	7.4	7.3
April	8.7	8	7.5
May	10.3	9.4	8.7
June	12.1	11.2	10.3
July	13.7	12.9	12.1
August	14.4	14	13.7
September	14.3	14.1	13.7
October	13.7	13.2	12.5
November	12.5	11.6	10.8
December	10.8	10	9.2

°F

Sea of the Hebrides water temperature by month

	Max. Water Temperature (°F)	ø. Water Temperature (°F)	Min. Water Temperature (°F)
January	48.4	47.3	46.4
February	46.4	45.9	45.3
March	45.7	45.3	45.1
April	47.7	46.4	45.5
May	50.5	48.9	47.7
June	53.8	52.2	50.5
July	56.7	55.2	53.8
August	57.9	57.2	56.7
September	57.7	57.4	56.7
October	56.7	55.8	54.5
November	54.5	52.9	51.4
December	51.4	50	48.6

September is the month with the warmest water temperature at 57.4°F / 14.1°C. The month with the coldest is March with an average water temperature of 45.3°F / 7.4°C.

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Portstewart weather today & 14-day weather forecast

7-day weather forecast
+9-day forecast

7-day weather forecast

Date	Weather	Max. F Min. F	Max. C Min. C	Windspeed Windir.	Precip. Rainrisk	Rel. Humidity
Oct. 13	Light shower rain	55 °F 50°F	13 °C 10°C	5mph (7km/h) southwest	0in (4mm) 65 %	79%
Oct. 14	Overcast clouds	60 °F 48°F	16 °C 9°C	5mph (9km/h) south	0in (1mm) 40 %	82%
Oct. 15	Light rain	56 °F 49°F	13 °C 10°C	3mph (5km/h) west-southwest	0in (8mm) 80 %	81%
Oct. 16	Light shower rain	53 °F 48°F	12 °C 9°C	3mph (6km/h) west-northwest	0in (2mm) 50 %	79%
Oct. 17	Few clouds	53 °F 45°F	12 °C 7°C	1mph (2km/h) south	0in (0mm) 10 %	83%
Oct. 18	Few clouds	53 °F 42°F	11 °C 5°C	1mph (2km/h) south	0in (0mm) 0 %	86%
Oct. 19	Broken clouds	53 °F 44°F	12 °C 7°C	2mph (3km/h) south-southwest	0in (0mm) 15 %	85%

+9-day forecast

Date	Weather	Max. F Min. F	Max. C Min. C	Windspeed Windir.	Precip. Rainrisk	Rel. Humidity
Oct. 20	Scattered clouds	52 °F 44°F	11 °C 7°C	3mph (5km/h) east-northeast	0in (0mm) 20 %	82%
Oct. 21	Broken clouds	56 °F 48°F	13 °C 9°C	3mph (5km/h) east	0in (1mm) 25 %	87%
Oct. 22	Overcast clouds	54 °F 49°F	12 °C 10°C	2mph (4km/h) east	0in (0mm) 10 %	88%
Oct. 23	Overcast clouds	56 °F 50°F	13 °C 10°C	2mph (4km/h) east	0in (0mm) 0 %	86%
Oct. 24	Overcast clouds	56 °F 50°F	14 °C 10°C	3mph (4km/h) east-northeast	0in (0mm) 0 %	80%
Oct. 25	Light shower rain	55 °F 48°F	13 °C 9°C	1mph (2km/h) northeast	0in (3mm) 60 %	78%
Oct. 26	Few clouds	56 °F 42°F	14 °C 5°C	1mph (2km/h) southeast	0in (0mm) 20 %	82%
Oct. 27	Broken clouds	57 °F 44°F	14 °C 7°C	2mph (3km/h) southeast	0in (0mm) 20 %	90%
Oct. 28	Light shower rain	56 °F 49°F	13 °C 9°C	3mph (4km/h) southeast	0in (2mm) 50 %	94%

Portstewart weather by month / climate table

°C

	Max. Temperature °C	ø. Temperature °C	Min. Temperature (°C)	Precip. (mm)	Rainy Days (d)	Rel. Humidity (%)
January	7.3	4.5	1.8	119.3	17	85.4%
February	7.4	4.6	1.7	78.9	10	82.6%
March	9.1	5.5	1.2	54.3	9	80.3%
April	12.2	7.4	3.4	54.4	8	78.6%
May	13.9	9.9	5	50.9	11	78.3%
June	16.5	12.3	8.6	83.9	15	79.9%
July	17.7	13.9	10.4	99.7	18	81.4%
August	17.3	13.8	10.6	117.1	20	82.5%
September	16.5	12.5	9.4	91.7	14	81.9%
October	13.1	9.8	6.5	108.2	0	83%
November	10.2	7	3.7	125.1	18	84.8%
December	7.9	5	2	107.5	15	85.9%

°F

	Max. Temperature °F	ø. Temperature °F	Min. Temperature (°F)	Precip. (in)	Rainy Days (d)	Rel. Humidity (%)
January	45.1	40.1	35.2	4.7	17	85.4%
February	45.3	40.3	35.1	3.1	10	82.6%
March	48.4	41.9	34.2	2.1	9	80.3%
April	54	45.3	38.1	2.1	8	78.6%
May	57	49.8	41	2	11	78.3%
June	61.7	54.1	47.5	3.3	15	79.9%
July	63.9	57	50.7	3.9	18	81.4%
August	63.1	56.8	51.1	4.6	20	82.5%
September	61.7	54.5	48.9	3.6	14	81.9%
October	55.6	49.6	43.7	4.3	0	83%
November	50.4	44.6	38.7	4.9	18	84.8%
December	46.2	41	35.6	4.2	15	85.9%

May is the driest at 2in / 50.9mm and November the wettest month with 4.9in / 125.1mm. With an average temperature of 57°F / 13.9°C, July is the warmest month in a year. January is the coldest with 40.1°F / 4.5°C average temperature.

Activities & POI in Portstewart

Type of Activity	List
Beach	Portstewart Strand
Golf Course	Riverside - Portstewart Golf Club, The Strand - Portstewart Golf Club, The Old Course
Caravan Site	Juniper Hill Caravan Park

Sea of the Hebrides