What is the soil temperature in Dublin, Leinster?

Soil temperature at 6cm in Dublin, Leinster is currently 15.8°C. Seeding conditions are open — soil is 15.8°C at 6cm and holding above 9°C.

Soil temperature in Dublin, Leinster

Soil temperature

15.8°C60°F

at 6cm — germination depth

Cooling over the next 11 days.

Seeding conditions are open — soil is 15.8°C at 6cm and holding above 9°C.

Almost every UK and Irish lawn is a ryegrass and fescue mix, whether it was sown or turfed. We assume that, and use9°C as the seeding threshold.

I know what grass I have

The differences are small. Ryegrass is the quickest off the mark; bluegrass is the slowest and wants the warmest soil. Everything else sits between.

Soil temperature at 6cm for reliable germination. Sources onthe method page.
Species	Soil temp	Days
Perennial ryegrasslikely yours	8°C	5–10
Red / chewings fescuelikely yours	8–10°C	10–14
Tall fescue	10–12°C	10–14
Browntop bentColonial bentgrass	10–12°C	14–21
Smooth-stalked meadow grassKentucky bluegrass	12–13°C	14–28

Soil temperature at 6cm in Dublin, Leinster is currently 15.8°C, and falling about 2.6°C over the next 11 days. That depth matters because it is where grass seed sits and where roots start working, and it lags air temperature by days — which is why a warm afternoon here tells you very little on its own.

Lawns in this area are typically perennial ryegrass with fescue, which is what most lawns round here are sown with. That blend needs the soil to hold above 9°C before seed germinates reliably. Seeding conditions are open — soil is 15.8°C at 6cm and holding above 9°C.

10 of the next 10 days are good mowing days. The best weekend slot right now is Saturday 8am–8pm, on the basis that no rain since Friday, ground soft in places.

The next recommended window in Dublin opens at 2pm on Wednesday 2 September, because that is when the dew has burnt off — earlier than that and you are cutting wet grass. Underfoot, the ground reads as firm after 21mm rain over the last week.

See the full mowing forecast for Dublin

The next 10 days

Column height is how mowable the day is; the lighter band is the best stretch within it. The line is soil temperature at 6cm.

9°C — seeding

Soil at 6cm 18.4°C cooling to 14.8°C

Wednesday 2 September · 2pm–9pmConfident

2pm–9pm — rain earlier today, ground firm

Marginal:Grass wetness: Grass dryrain earlier today
Good:Ground firmness: Ground firm21mm rain over the last week
Good:Growth: Growing wellgrowth potential 0.99
Good:Temperature: Temperature16°C
Good:Wind: Wind light9 km/h
Sociable hours: Fine by the neighboursstarts once the dew has burnt off

Limiting factor:none

Thursday 3 September · 8am–6pmConfident

8am–6pm — no rain since Wednesday, ground firm

Good:Grass wetness: Grass dryrain earlier today
Good:Ground firmness: Ground firm34mm rain over the last week
Good:Growth: Growing wellgrowth potential 0.95
Good:Temperature: Temperature17°C
Good:Wind: Wind light13 km/h
Sociable hours: A bit early or late, but finestarts when it stops being antisocial

Limiting factor:none

Friday 4 September · midday–9pmConfident

midday–9pm — ground soft in places — 37mm rain over the last week

Marginal:Grass wetness: Grass dryrain earlier today
Marginal:Ground firmness: Ground soft in places37mm rain over the last week
Good:Growth: Growing wellgrowth potential 0.78
Good:Temperature: Temperature15°C
Good:Wind: Wind light21 km/h
Sociable hours: Fine by the neighboursstarts once the dew has burnt off

Limiting factor:ground firmness

Saturday 5 September · 8am–8pmConfident

8am–8pm — no rain since Friday, ground soft in places

Good:Grass wetness: Grass dryno rain since Friday
Good:Ground firmness: Ground soft in places44mm rain over the last week
Good:Growth: Growing wellgrowth potential 0.62
Good:Temperature: Temperature12°C
Good:Wind: Wind light14 km/h
Sociable hours: A bit early or late, but finestarts when it stops being antisocial

Limiting factor:none

Sunday 6 September · 11am–5pmReasonably confident

11am–5pm — grass dry — rain earlier today

Marginal:Grass wetness: Grass dryrain earlier today
Good:Ground firmness: Ground firm40mm rain over the last week
Good:Growth: Growing wellgrowth potential 0.95
Good:Temperature: Temperature19°C
Good:Wind: Wind light17 km/h
Sociable hours: Fine by the neighboursstarts once the dew has burnt off

Limiting factor:grass wetness

Monday 7 September · 8am–2pmReasonably confident

8am–2pm — rain earlier today, ground firm

Good:Grass wetness: Grass dryrain earlier today
Good:Ground firmness: Ground firm37mm rain over the last week
Good:Growth: Growing wellgrowth potential 0.70
Good:Temperature: Temperature14°C
Good:Wind: Wind light23 km/h
Sociable hours: A bit early or late, but finestarts when it stops being antisocial

Limiting factor:none

Tuesday 8 September · 8am–11amReasonably confident

8am–11am — ground soft in places — 40mm rain over the last week

Poor:Grass wetness: Grass dryrain earlier today
Poor:Ground firmness: Ground soft in places40mm rain over the last week
Good:Growth: Growing wellgrowth potential 0.60
Good:Temperature: Temperature12°C
Good:Wind: Wind light17 km/h
Sociable hours: A bit early or late, but finestarts when it stops being antisocial

Limiting factor:ground firmness

Wednesday 9 September · 2pm–8pmReasonably confident

2pm–8pm — ground soft — 61mm rain over the last week

Good:Grass wetness: Grass drydried off since a shower 4 hours ago
Poor:Ground firmness: Ground soft61mm rain over the last week
Good:Growth: Growing steadilygrowth potential 0.42
Good:Temperature: Temperature11°C
Good:Wind: Wind light21 km/h
Sociable hours: Fine by the neighbours

Limiting factor:ground firmness

Thursday 10 September · 8am–8pmLow confidence this far out

8am–8pm — ground soft in places — 51mm rain over the last week

Good:Grass wetness: Grass dryno rain since Wednesday
Marginal:Ground firmness: Ground soft in places51mm rain over the last week
Good:Growth: Growing steadilygrowth potential 0.37
Good:Temperature: Temperature10°C
Good:Wind: Wind light6 km/h
Sociable hours: A bit early or late, but finestarts when it stops being antisocial

Limiting factor:ground firmness

Friday 11 September · 2pm–8pmLow confidence this far out

2pm–8pm — ground soft in places — 41mm rain over the last week

Good:Grass wetness: Grass dryno rain since Wednesday
Marginal:Ground firmness: Ground soft in places41mm rain over the last week
Good:Growth: Growing wellgrowth potential 0.65
Good:Temperature: Temperature13°C
Good:Wind: Wind light13 km/h
Sociable hours: Fine by the neighboursstarts once the rain has passed

Limiting factor:ground firmness

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