Pwllheli — Water Temperature in July

Water Temperature Range

13°C

minimum

15°C

average

19°C

maximum

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Water Temperature Chart for Month

The chart shows the average daily water temperature for each day of the month based on historical data.

Table of Water Temperatures by Day of the Month for Previous Years

Day	2026	2025	2024	2023
JUL 1	-	18°C	15°C	14°C
JUL 2	18°C	14°C	15°C	14°C
JUL 3	18°C	15°C	16°C	15°C
JUL 4	18°C	15°C	16°C	15°C
JUL 5	18°C	15°C	15°C	15°C
JUL 6	18°C	15°C	16°C	15°C
JUL 7	18°C	15°C	15°C	15°C
JUL 8	18°C	15°C	16°C	16°C
JUL 9	18°C	15°C	15°C	16°C
JUL 10	18°C	15°C	15°C	15°C
JUL 11	19°C	15°C	15°C	16°C
JUL 12	19°C	15°C	15°C	16°C
JUL 13	19°C	16°C	16°C	16°C
JUL 14	20°C	15°C	17°C	15°C
JUL 15	19°C	16°C	17°C	16°C
JUL 16	20°C	15°C	16°C	16°C
JUL 17	20°C	15°C	16°C	16°C
JUL 18	19°C	16°C	16°C	17°C
JUL 19	19°C	16°C	16°C	17°C
JUL 20	19°C	16°C	16°C	17°C
JUL 21	19°C	16°C	16°C	17°C
JUL 22	19°C	16°C	16°C	18°C
JUL 23	19°C	16°C	16°C	18°C
JUL 24	19°C	16°C	16°C	18°C
JUL 25	19°C	16°C	16°C	17°C
JUL 26	19°C	16°C	16°C	18°C
JUL 27	-	16°C	16°C	17°C
JUL 28	-	16°C	16°C	17°C
JUL 29	-	16°C	16°C	16°C
JUL 30	-	16°C	16°C	17°C
JUL 31	-	16°C	17°C	17°C

July: Climate and Swimming Opportunities

Average Night Air Temperature

13°C

Average Day Air Temperature

20°C

Precipitation Amount per Month

70 mm

Number of Rainy Days

Daylight per Day

16 hrs

Sunshine per Day

5 hrs

Average Wind Speed

15 km/h

Average Humidity

84%

With such a ratio between the average monthly temperatures of water and air, swimming feels very cold and is only for cold-water enthusiasts. Most people will prefer just a brief splash, because warming up afterward can take time.