Forecast issued at: Tuesday 30th September 2025 12:00
Rain
Rainfall amounts have been below average across the country during the past 7 days. The lowest recorded rainfall amount was 4.9mm (25% of average) at Shannon Airport, while the highest recorded amount was 17.6mm (69% of average) at Claremorris, Co. Mayo. Rainfall totals over the next 7 days are likely to trend above normal nationwide. It looks set to be wettest in Atlantic coastal counties with 2-3 times the weekly average rainfall forecast. It will be somewhat drier in the southeast with 1.5 times the normal amount of rainfall expected.
Temperatures
Mean air temperatures have been below average across much of the country during the past 7 days, ranging between +0.1 and -2.3 degrees. Mean air temperatures ranged from 10 degrees at Dublin airport to 13 degrees at Valentia Observatory. Mean air temperatures are expected to be 2 or 3 degrees above normal for the week ahead, ranging from 13 to 14 degrees. Soil temperatures remain close to or above average across most of the country. They ranged from 11.6 degrees at Dublin Airport, to 13.8 degrees at Valentia Observatory. Soil temperatures are expected to be similar or slightly milder for the coming week.
Sunshine
Sunshine amounts have been above average across the country during the past week. The sunniest location was Malin Head in County Donegal which measured 47 hours of sunshine (189% of average). Sunshine amounts over the next 7 days will trend generally below the climatological average as the weather turns more unsettled.
Drying Conditions
Drying conditions will be quite poor this week due to the outbreaks of rain and drizzle. The best opportunities will be across eastern and southeastern areas this afternoon (Tuesday) and on Wednesday afternoon.
Spraying
There will be very limited opportunities for spraying this week. There will be limited opportunities at times on Wednesday in eastern and southern areas.
Field Conditions
Soil moisture deficits for well and moderately drained soils range from around 0 to 10mm. Soil moisture deficits for poorly drained soils generally range from -10 to 0mm with the exception of some pockets in the east and south of the country. Soil moisture deficits (SMDs) will decrease over the coming week with well drained soils becoming saturated, while many poorly drained soils will become waterlogged during the period.
Further Comments
A potato advisory is in effect. From Tuesday 29th September until Wednesday 1st October, weather conditions conducive to the spread of potato blight will affect many coastal regions, mostly in the south, southwest, west and northwest. Forecast maps and meteograms can be found on www.met.ie â" Forecasts â" Blight Forecast. Forecast maps and meteograms can be found on Blight Forecast.
