Harlech Water Temperature

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Harlech is a town close to Irish Sea. August is the month with the warmest water temperature at 61.9°F / 16.6°C. The coolest month is February with an avg. water temperature of 45.5°F / 7.5°C. March is the sunniest at 1.5in / 38.7mm and December the wettest month with 6.3in / 160.7mm. The average air temperature is around 58.8°F / 14.9°C, July is the hottest month in a year. February is the coolest with 39.6°F / 4.2°C average air temperature. temperate oceanic climate with warm summer would be the climate here. June, July, August, September would be the best time to visit.

Harlech Summary

Description	Value
Current water temperature	/
Warmest Month Water Temperature:	August with 16.6°C / 61.9°F
Coldest Month Water Temperature:	February with 7.5°C / 45.5°F
Warmest Month Air Temperature:	July with 14.9°C / 58.8°F
Coldest Month Air Temperature:	February with 4.2°C / 39.6°F
Wettest Month:	December with 160.7mm / 6.3in
Driest Month:	March with 38.7mm / 1.5in
Highest Humidity	December with 89%
Lowest Humidity	May with 79.4%
Best Time to Visit:	June, July, August, September
Climate Classification	temperate oceanic climate with warm summer

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Harlech water temperature by month

°C

Irish Sea water temperature by month

	Max. Water Temperature (°C)	ø. Water Temperature (°C)	Min. Water Temperature (°C)
January	8.9	8.3	7.8
February	7.8	7.6	7.4
March	8.1	7.6	7.3
April	10	9	8.1
May	12.6	11.2	10.1
June	14.8	13.7	12.6
July	16.3	15.7	14.8
August	16.7	16.5	16.2
September	16.5	16	15.3
October	15.3	14.4	13.3
November	13.2	12.1	10.9
December	10.8	9.9	8.9

°F

Irish Sea water temperature by month

	Max. Water Temperature (°F)	ø. Water Temperature (°F)	Min. Water Temperature (°F)
January	48	46.9	46
February	46	45.7	45.3
March	46.6	45.7	45.1
April	50	48.2	46.6
May	54.7	52.2	50.2
June	58.6	56.7	54.7
July	61.3	60.3	58.6
August	62.1	61.7	61.2
September	61.7	60.8	59.5
October	59.5	57.9	55.9
November	55.8	53.8	51.6
December	51.4	49.8	48

August is the month with the warmest water temperature at 61.9°F / 16.6°C. The month with the coldest is February with an average water temperature of 45.5°F / 7.5°C.

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Harlech 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. 01	Moderate rain	60 °F 55°F	16 °C 13°C	4mph (6km/h) south-southwest	0in (10mm) 85 %	81%
Oct. 02	Heavy rain	62 °F 58°F	17 °C 14°C	6mph (9km/h) south-southwest	1in (19mm) 90 %	88%
Oct. 03	Light shower rain	58 °F 49°F	15 °C 9°C	1mph (2km/h) west-southwest	0in (3mm) 60 %	74%
Oct. 04	Heavy rain	60 °F 47°F	16 °C 8°C	2mph (4km/h) south-southeast	1in (23mm) 90 %	82%
Oct. 05	Light shower rain	61 °F 59°F	16 °C 15°C	2mph (4km/h) southwest	0in (3mm) 60 %	93%
Oct. 06	Light rain	61 °F 53°F	16 °C 12°C	2mph (4km/h) southwest	0in (9mm) 80 %	94%
Oct. 07	Broken clouds	52 °F 41°F	11 °C 5°C	1mph (2km/h) southwest	0in (1mm) 25 %	86%

+9-day forecast

Date	Weather	Max. F Min. F	Max. C Min. C	Windspeed Windir.	Precip. Rainrisk	Rel. Humidity
Oct. 08	Scattered clouds	52 °F 38°F	11 °C 3°C	1mph (1km/h) west	0in (0mm) 0 %	84%
Oct. 09	Overcast clouds	54 °F 48°F	12 °C 9°C	2mph (3km/h) west-southwest	0in (1mm) 25 %	92%
Oct. 10	Heavy rain	55 °F 44°F	13 °C 7°C	2mph (3km/h) west-southwest	1in (19mm) 90 %	97%
Oct. 11	Light shower rain	52 °F 45°F	11 °C 7°C	4mph (6km/h) northwest	0in (4mm) 70 %	87%
Oct. 12	Overcast clouds	52 °F 44°F	11 °C 7°C	1mph (2km/h) south-southeast	0in (0mm) 15 %	71%
Oct. 13	Broken clouds	53 °F 37°F	12 °C 3°C	1mph (1km/h) north-northeast	0in (0mm) 20 %	71%
Oct. 14	Clear Sky	56 °F 39°F	13 °C 4°C	2mph (3km/h) northeast	0in (0mm) 0 %	74%
Oct. 15	Few clouds	62 °F 41°F	17 °C 5°C	1mph (2km/h) south	0in (0mm) 0 %	79%
Oct. 16	Light shower rain	54 °F 49°F	12 °C 9°C	2mph (3km/h) northwest	0in (2mm) 50 %	92%

Harlech weather by month / climate table

°C

	Max. Temperature °C	ø. Temperature °C	Min. Temperature (°C)	Precip. (mm)	Rainy Days (d)	Rel. Humidity (%)
January	7	4.4	1.4	135.4	17	88.6%
February	7.1	4.2	1.1	100.6	10	85.7%
March	9.7	5.3	0.4	39.7	7	83.1%
April	13.2	7.7	2.8	40.5	6	79.6%
May	15	10.6	5.5	45.3	10	79.4%
June	18.3	13.3	8.9	38.7	7	80.2%
July	18.9	14.9	11.1	50.6	16	82.1%
August	18.4	14.6	11	125.4	19	84.7%
September	17.2	13	8.9	59.1	11	84.4%
October	14.8	10.3	6.4	120	0	85.7%
November	11.2	7.2	3	145.5	17	88.3%
December	8.1	5.1	1.5	160.7	17	89%

°F

	Max. Temperature °F	ø. Temperature °F	Min. Temperature (°F)	Precip. (in)	Rainy Days (d)	Rel. Humidity (%)
January	44.6	39.9	34.5	5.3	17	88.6%
February	44.8	39.6	34	4	10	85.7%
March	49.5	41.5	32.7	1.6	7	83.1%
April	55.8	45.9	37	1.6	6	79.6%
May	59	51.1	41.9	1.8	10	79.4%
June	64.9	55.9	48	1.5	7	80.2%
July	66	58.8	52	2	16	82.1%
August	65.1	58.3	51.8	4.9	19	84.7%
September	63	55.4	48	2.3	11	84.4%
October	58.6	50.5	43.5	4.7	0	85.7%
November	52.2	45	37.4	5.7	17	88.3%
December	46.6	41.2	34.7	6.3	17	89%

March is the most draught at 1.5in / 38.7mm and December the month with the most rain around 6.3in / 160.7mm. The avg. temperature is around 58.8°F / 14.9°C, July is the hottest month in a year. February is the coolest with 39.6°F / 4.2°C avg. temperature.

Activities & POI in Harlech

Type of Activity	List
Attraction	Harlech Castle
Golf Course	Royal Saint Davids Golf Course
Caravan Site	Castle View Holiday Park

Irish Sea