Weather in Dublin in August 2025
Average weather
Average temperature in Dublin in August
The temperature in August is +20°C on average, with a range between a maximum of +24°C during the day and a minimum of +11°C at night.
The average maximum temperature goes down 31% by the end of the month, compared with the beginning of the month, from +20°C to +16°C.
Is Dublin warm or cold in August?
Dublin is typically mild in August.
Maximum temperatures go down compared to the previous month from +20°C to +19°C. The minimum temperature also goes up from +13°C to +13°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
August is one of the warmest months in Dublin, here is the comparison with other months:
Water temperature in Dublin in August
Water in Dublin in August is Cold. It varies from +14°C to +16°C, with an average of +15°C. This is almost similar to the air temperature, which averages +19°C.
The water temperature in August is one of the warmest of the entire year:
Can you swim in Dublin in August?
Climate in Dublin in August
| July | August | September | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +20°C | +19°C | +17°C | ||||
| Min. temperature | ||||||
| +5°C | +3°C | +1°C | ||||
| Max. temperature | ||||||
| +31°C | +29°C | +27°C | ||||
| Rainfall | ||||||
| 74 mm | 83 mm | 72 mm | ||||
| Wind | ||||||
| 4 m/s | 4 m/s | 4 m/s | ||||
| Avg. water temperature | ||||||
| +14°C | +15°C | +15°C | ||||
| Humidity | ||||||
| 79% | 80% | 81% | ||||
| Air pressure | ||||||
| 1014 HPa | 1013 HPa | 1013 HPa | ||||
| Sunny days | ||||||
| 1 | 1 | 1 | ||||
| Cloudy days | ||||||
| 8 | 9 | 11 | ||||
| Rainy days | ||||||
| 21 | 21 | 18 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
August weather is still as ok as in July. It’s getting colder in August. From +20°C in the day, the average maximum temperature lowers to +19°C. Prepare for more rain. Average rainfall goes from 74 mm to 83 mm. Humidity rises from 79% to 80%. The average wind speed doesn’t change much during August, staying around 4 m/s. The amount of sunny days stay about the same, averaging 1 sunny days during the month.
September brings much the same weather, it remains ok.
Wind
The average wind speed is 5 m/s getting up to 8 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Dublin is gradually decreasing during August, going from 5 m/s to 3 m/s over the course of the month.
Rain
How was the weather last August in Dublin?
Climate Change over Years
The climate in Dublin in August has not changed much over the last 43 years.
The average temperature was the lowest in 1979 (+12°C) and the highest in 2023 (+15°C). The driest year was 1991 with only 627 mm of rainfall, and the wettest year was 2013 with 15853 mm.
FAQ
Is August a good time to visit Dublin?
Can you sunbathe in Dublin in August?
Can you swim in Dublin in August?
Is Dublin rainy in August?
Is it sunny in Dublin in August?
Other cities in Ireland
Monthly weather in Dublin
Source of the data
For this page, we’ve looked at the typical weather in Dublin, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.