Newcastle Water Temperature

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Newcastle is a town close to Irish Sea. September is the month with the highest water temperature at 57°F / 13.9°C.
The coldest month is March with an average water temperature of 45°F / 7.2°C.
April is the driest at 1.5in / 37.4mm and October the wettest month with 5.2in / 131mm.
With an average air temperature of 57.7°F / 14.3°C, July is the warmest month in a year. February is the coldest with 41.2°F / 5.1°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.

Newcastle Summary

Description	Value
Current water temperature	/
Warmest Month Water Temperature:	September with 13.9°C / 57°F
Coldest Month Water Temperature:	March with 7.2°C / 45°F
Warmest Month Air Temperature:	July with 14.3°C / 57.7°F
Coldest Month Air Temperature:	February with 5.1°C / 41.2°F
Wettest Month:	October with 131mm / 5.2in
Driest Month:	April with 37.4mm / 1.5in
Highest Humidity	December with 84.3%
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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Newcastle water temperature by month

°C

Irish Sea water temperature by month

	Max. Water Temperature (°C)	ø. Water Temperature (°C)	Min. Water Temperature (°C)
January	9.3	8.6	8
February	8	7.6	7.3
March	7.4	7.2	7.1
April	8.5	7.9	7.4
May	10.2	9.3	8.5
June	12.1	11.2	10.2
July	13.5	12.9	12.1
August	14.1	13.8	13.4
September	14	13.9	13.7
October	13.7	13.2	12.7
November	12.7	11.9	11.1
December	11	10.2	9.3

°F

Irish Sea water temperature by month

	Max. Water Temperature (°F)	ø. Water Temperature (°F)	Min. Water Temperature (°F)
January	48.7	47.5	46.4
February	46.4	45.7	45.1
March	45.3	45	44.8
April	47.3	46.2	45.3
May	50.4	48.7	47.3
June	53.8	52.2	50.4
July	56.3	55.2	53.8
August	57.4	56.8	56.1
September	57.2	57	56.7
October	56.7	55.8	54.9
November	54.9	53.4	52
December	51.8	50.4	48.7

September is the month with the warmest water temperature at 57°F / 13.9°C. The month with the coldest is March with an average water temperature of 45°F / 7.2°C.

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Newcastle 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
Dec. 22	Scattered clouds	44 °F 38°F	7 °C 4°C	5mph (8km/h) west	0in (0mm) 0 %	71%
Dec. 23	Broken clouds	49 °F 37°F	9 °C 3°C	3mph (5km/h) west	0in (0mm) 0 %	77%
Dec. 24	Overcast clouds	54 °F 44°F	12 °C 7°C	3mph (5km/h) southwest	0in (0mm) 0 %	92%
Dec. 25	Overcast clouds	54 °F 50°F	12 °C 10°C	3mph (5km/h) southwest	0in (0mm) 0 %	85%
Dec. 26	Overcast clouds	51 °F 48°F	11 °C 9°C	2mph (4km/h) west-southwest	0in (0mm) 0 %	85%
Dec. 27	Overcast clouds	50 °F 47°F	10 °C 8°C	2mph (4km/h) southwest	0in (0mm) 0 %	83%
Dec. 28	Overcast clouds	47 °F 44°F	9 °C 7°C	3mph (4km/h) southwest	0in (0mm) 0 %	85%

+9-day forecast

Date	Weather	Max. F Min. F	Max. C Min. C	Windspeed Windir.	Precip. Rainrisk	Rel. Humidity
Dec. 29	Overcast clouds	46 °F 41°F	8 °C 5°C	3mph (4km/h) southwest	0in (0mm) 0 %	83%
Dec. 30	Overcast clouds	44 °F 42°F	7 °C 5°C	3mph (5km/h) southwest	0in (0mm) 0 %	89%
Dec. 31	Overcast clouds	46 °F 41°F	8 °C 5°C	3mph (5km/h) southwest	0in (0mm) 0 %	83%
Jan. 01	Light rain	40 °F 39°F	5 °C 4°C	4mph (7km/h) west	0in (8mm) 80 %	91%
Jan. 02	Light shower rain	40 °F 37°F	4 °C 3°C	3mph (4km/h) west-southwest	0in (3mm) 60 %	77%
Jan. 03	Broken clouds	41 °F 38°F	5 °C 4°C	4mph (6km/h) south-southwest	0in (0mm) 0 %	85%
Jan. 04	Light shower rain	40 °F 39°F	5 °C 4°C	4mph (7km/h) northwest	0in (2mm) 50 %	86%
Jan. 05	Light shower rain	43 °F 38°F	6 °C 3°C	5mph (8km/h) northwest	0in (3mm) 60 %	72%
Jan. 06	Light shower rain	41 °F 37°F	5 °C 3°C	4mph (6km/h) west	0in (3mm) 60 %	72%

Newcastle weather by month / climate table

°C

	Max. Temperature °C	ø. Temperature °C	Min. Temperature (°C)	Precip. (mm)	Rainy Days (d)	Rel. Humidity (%)
January	7.8	5.2	3	101.2	11	83.5%
February	7.4	5.1	2.8	75.3	7	81.7%
March	8.7	5.8	1.9	46.3	3	80.3%
April	11.5	7.6	4.3	37.4	5	79%
May	13.4	10	6.2	48.8	6	78.3%
June	15.9	12.6	9.5	62.3	5	79.4%
July	17.1	14.3	11.5	55.5	10	80.8%
August	16.9	14.2	11.5	121.3	11	81.9%
September	16	13	10.1	77.4	7	81.9%
October	13.5	10.5	7.7	131	0	82.1%
November	10.7	7.7	5	122	13	83.4%
December	8.6	5.8	3.4	96.3	9	84.3%

°F

	Max. Temperature °F	ø. Temperature °F	Min. Temperature (°F)	Precip. (in)	Rainy Days (d)	Rel. Humidity (%)
January	46	41.4	37.4	4	11	83.5%
February	45.3	41.2	37	3	7	81.7%
March	47.7	42.4	35.4	1.8	3	80.3%
April	52.7	45.7	39.7	1.5	5	79%
May	56.1	50	43.2	1.9	6	78.3%
June	60.6	54.7	49.1	2.5	5	79.4%
July	62.8	57.7	52.7	2.2	10	80.8%
August	62.4	57.6	52.7	4.8	11	81.9%
September	60.8	55.4	50.2	3	7	81.9%
October	56.3	50.9	45.9	5.2	0	82.1%
November	51.3	45.9	41	4.8	13	83.4%
December	47.5	42.4	38.1	3.8	9	84.3%

April is the most draught at 1.5in / 37.4mm and October the month with the most rain around 5.2in / 131mm. The avg. temperature is around 57.7°F / 14.3°C, July is the hottest month in a year. February is the coolest with 41.2°F / 5.1°C avg. temperature.

Activities & POI in Newcastle

Type of Activity	List
Golf Course	Royal County Down Golf Course
Caravan Site	Bonnys Caravan Park, Woodcroft Caravan park, Mourneview Caravan Park, Windsor Caravan Park

Irish Sea