Forecast issued at: Tuesday 16th September 2025 12:00
Rain
Rainfall amounts were above average across the country during the past seven days. The least amount of rainfall was recorded at Casement Aerodrome, Co. Dublin where 18.4mm (129% of average) was recorded. The wettest station was Knock Airport, Co. Mayo where 87.3mm (338% of average) was recorded. With unsettled and changeable weather, including a mix of sometimes heavy showers and longer spells of rain, forecast for the coming seven days, rainfall amounts are forecast to be mixed across the country. The western half of the country is expected to see close to or below average rainfall while the eastern half is expected see above average rainfall.
Temperatures
Mean air temperatures for the last seven days were slightly below average. The warmest such temperature, 14 degrees, was at Roches Point, Co. Cork while the lowest was 11.9 degrees recorded at Knock Airport, Co. Mayo. Mean air temperatures are forecast to continue to trend slightly below normal for the coming week, ranging from 11 to 13 degrees generally. Soil temperatures were average or slightly above average during the past 7 days, ranging from 13 to 15 degrees and are expected to stay similar for the coming week.
Sunshine
Sunshine amounts were near to or above average across most of the country during the past seven days. The exception was at Knock Airport, Co. Mayo where just 17.3 hours (69% of average) were recorded. In contrast, 46.6 hours (150% of average) were recorded at Cork Airport. With unsettled and mixed conditions forecast for the coming week, sunshine amounts will likely be close to or slightly below normal for most stations.
Drying Conditions
Drying conditions will be moderate for a time today, and for much of tomorrow once the overnight rain clears. Otherwise, drying conditions are expected to be poor or very poor with showers or spells of rain forecast.
Spraying
There will be some opportunities for spraying early today, and over the northern half of the country on Thursday. However, with unsettled conditions, including wet and at times breezy weather, forecast for the coming week, spraying conditions will be limited in general.
Field Conditions
Soils are currently driest in parts of Leinster and east Munster where soil moisture deficits (SMDs) are between 10 and 25mm. In contrast, soil moisture deficits are between 0 and -10mm elsewhere, i.e. saturated or waterlogged. With rain and showers forecast for the coming days, soils across the country which are not already saturated or waterlogged are expected to become so.
Further Comments
Weather conditions conducive to the spread of potato blight will develop in parts of Munster on Wednesday 17th September. Forecast maps and meteograms can be found on Blight Forecast.
