June weather forecast
Mirissa, Sri Lanka

The onset of June introduces modest fluctuations in weather by the decreasing daylight hours. Monthly extreme temperatures hold steady, corroborated by the constant UV index. Sea temperatures remain consistent with the past months, sustaining a conducive seaside environment. However, June maintains heavy rainfall, albeit slightly lower at 173mm (6.81") spread across 11 days.

Temperature

Mirissa in June records a high-temperature average of a still tropical 30°C (86°F), on par with May. Mirissa navigates through June with a barely noticeable decrease in temperature at night, stabilizing at a warm 25°C (77°F).

Rainfall

In June, the rain falls for 11 days. Throughout June, 173mm (6.81") of precipitation is accumulated. Throughout the year, in Mirissa, there are 116 rainfall days, and 2216mm (87.24") of precipitation is accumulated.

Sea temperature

January, February, June through October and December, with an average sea temperature of 28°C (82.4°F), are months with the coldest seawater.
Note: Engaging in swimming, diving, or other water activities is highly enjoyable in temperatures ranging from 25°C (77°F) to 29°C (84.2°F), without any unpleasant sensations for prolonged durations.

Daylight

June has the longest days of the year, with an average of 12h and 30min of daylight.
On the first day of the month, sunrise is at 05:52 and sunset at 18:19. On the last day of June, in Mirissa, sunrise is at 05:57 and sunset at 18:25 +0530.

Sunshine

The months with the least sunshine in Mirissa, Sri Lanka, are May through December, with an average of 6h of sunshine.

UV index

January through October, with an average maximum UV index of 12, are months with the highest UV index. A UV Index of 11, and more, symbolizes an extreme health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily maximum UV index of 12 in June interprets into the following advice:
Employ all critical precautions. Guarding against sun damage is essential. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. After a swim or an outdoor workout, generously apply and reapply a broad-spectrum SPF 30+ sunscreen. Be mindful! Sand and water reflections can up the Sun's UV exposure.