What is the sea temperature in Saint Helier in July?

The sea off Saint Helier averages about 17°C in July.

When is the best time to visit Saint Helier?

Saint Helier is warmest in Aug and driest in Jul; mild (18–28°C) months are Aug.

coastal destination · warmest in Aug · sea ~17°C in July · budget-friendly

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg °C	6	6	8	9	12	15	17	18	16	13	10	8
Sea °C	10	9	9	10	12	14	17	18	18	16	14	11
Rain (days)	98	77	71	51	51	48	38	46	69	88	107	103

Warmest month: Aug. Driest: Jul.

Augmild (18–28°C)