Soil temperature in Coleraine, Northern Ireland
Soil temperature
13.8°C57°F
at 6cm — germination depth
Cooling over the next 11 days.
Seeding conditions are open — soil is 13.8°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.
| 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 Coleraine, Northern Ireland is currently 13.8°C, and falling about 2.1°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 13.8°C at 6cm and holding above 9°C.
8 of the next 10 days are good mowing days. The other 2 are held back by wet grass or soft ground. The best weekend slot right now is Saturday 8am–9pm, on the basis that rain earlier today, ground firm.
The next recommended window in Coleraine opens at 8am on Wednesday 2 September, because anything earlier is the hour your neighbours will remember. Underfoot, the ground reads as soft in places after 16mm rain over the last week.
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 15.9°C cooling to 13.1°C
Wednesday 2 September: Good. 8am–4pm — ground soft in places — 16mm rain over the last week
Wednesday 2 September · 8am–4pmConfident
8am–4pm — ground soft in places — 16mm rain over the last week
- Good:Grass wetness
- Grass dryrain earlier today
- Marginal:Ground firmness
- Ground soft in places16mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.84
- Good:Temperature
- Temperature15°C
- Good:Wind
- Wind light8 km/h
- Sociable hours
- A bit early or late, but finestarts when it stops being antisocial
Limiting factor:ground firmness
Thursday 3 September: Good. 8am–9pm — ground soft in places — 16mm rain over the last week
Thursday 3 September · 8am–9pmConfident
8am–9pm — ground soft in places — 16mm rain over the last week
- Good:Grass wetness
- Grass dryrain earlier today
- Good:Ground firmness
- Ground soft in places16mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.84
- Good:Temperature
- Temperature15°C
- Good:Wind
- Wind light11 km/h
- Sociable hours
- A bit early or late, but finestarts when it stops being antisocial
Limiting factor:ground firmness
Friday 4 September: Good. 8am–11am — ground soft in places — 16mm rain over the last week
Friday 4 September · 8am–11amConfident
8am–11am — ground soft in places — 16mm rain over the last week
- Good:Grass wetness
- Grass dryrain earlier today
- Good:Ground firmness
- Ground soft in places16mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.61
- Good:Temperature
- Temperature13°C
- Marginal:Wind
- Wind light22 km/h
- Sociable hours
- A bit early or late, but finestarts when it stops being antisocial
Limiting factor:ground firmness
Saturday 5 September: Good. 8am–9pm — rain earlier today, ground firm
Saturday 5 September · 8am–9pmConfident
8am–9pm — rain earlier today, ground firm
- Good:Grass wetness
- Grass dryrain earlier today
- Good:Ground firmness
- Ground firm17mm rain over the last week
- Good:Growth
- Growing steadilygrowth potential 0.49
- Good:Temperature
- Temperature11°C
- Good:Wind
- Wind light19 km/h
- Sociable hours
- A bit early or late, but finestarts when it stops being antisocial
Limiting factor:none
Sunday 6 September: Not worth it. No — 5.5mm of rain falling.
Sunday 6 SeptemberReasonably confident
No — 5.5mm of rain falling.
- Poor:Grass wetness
- Grass wetraining now
- Poor:Ground firmness
- Ground soft15mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.77
- Good:Temperature
- Temperature16°C
- Marginal:Wind
- Wind light23 km/h
Limiting factor:grass wetness
Monday 7 September: Good. 2pm–8pm — ground soft — 44mm rain over the last week
Monday 7 September · 2pm–8pmReasonably confident
2pm–8pm — ground soft — 44mm rain over the last week
- Good:Grass wetness
- Grass drydried off since a shower 0 hours ago
- Poor:Ground firmness
- Ground soft44mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.58
- Good:Temperature
- Temperature13°C
- Marginal:Wind
- Wind light24 km/h
- Sociable hours
- Fine by the neighboursstarts once the rain has passed
Limiting factor:ground firmness
Tuesday 8 September: Not worth it. No — 0.1mm of rain falling.
Tuesday 8 SeptemberReasonably confident
No — 0.1mm of rain falling.
- Poor:Grass wetness
- Grass dryraining now
- Poor:Ground firmness
- Ground saturated42mm rain over the last week
- Marginal:Growth
- Growing slowlygrowth potential 0.33
- Good:Temperature
- Temperature11°C
- Good:Wind
- Wind light20 km/h
Limiting factor:ground firmness
Wednesday 9 September: Good. No — 0.2mm of rain falling.
Wednesday 9 SeptemberReasonably confident
No — 0.2mm of rain falling.
- Good:Grass wetness
- Grass drydried off since a shower 1 hour ago
- Poor:Ground firmness
- Ground soft51mm rain over the last week
- Good:Growth
- Growing steadilygrowth potential 0.36
- Good:Temperature
- Temperature12°C
- Good:Wind
- Wind light21 km/h
Limiting factor:ground firmness
Thursday 10 September: Good. 8am–2pm — ground soft — 51mm rain over the last week
Thursday 10 September · 8am–2pmLow confidence this far out
8am–2pm — ground soft — 51mm rain over the last week
- Good:Grass wetness
- Grass dryno rain since Wednesday
- Poor:Ground firmness
- Ground soft51mm rain over the last week
- Marginal:Growth
- Growing slowlygrowth potential 0.33
- Good:Temperature
- Temperature10°C
- Good:Wind
- Wind light12 km/h
- Sociable hours
- A bit early or late, but finestarts when it stops being antisocial
Limiting factor:ground firmness
Friday 11 September: Good. 9am–2pm — grass dry — rain earlier today
Friday 11 September · 9am–2pmLow confidence this far out
9am–2pm — grass dry — rain earlier today
- Good:Grass wetness
- Grass dryrain earlier today
- Poor:Ground firmness
- Ground soft53mm rain over the last week
- Good:Growth
- Growing steadilygrowth potential 0.41
- Good:Temperature
- Temperature10°C
- Good:Wind
- Wind light15 km/h
- Sociable hours
- A bit early or late, but finestarts when it stops being antisocial
Limiting factor:grass wetness
Nearby
Your own postcode
These are town-centre figures. Yours will differ a little.