What is the soil temperature in Newport, Wales?

Soil temperature at 6cm in Newport, Wales is currently 16.5°C. Seeding conditions are open — soil is 16.5°C at 6cm and holding above 9°C.

Soil temperature in Newport, Wales

Soil temperature

16.5°C62°F

at 6cm — germination depth

Cooling over the next 11 days.

Seeding conditions are open — soil is 16.5°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 Newport, Wales is currently 16.5°C, and falling about 2.9°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 16.5°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 Sunday 10am–5pm, on the basis that rain earlier today, ground firm.

The next recommended window in Newport opens at 4pm on Wednesday 2 September, because the rain clears by then. Underfoot, the ground reads as firm after 36mm rain over the last week.

See the full mowing forecast for Newport

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 17.9°C cooling to 14.9°C

Wednesday 2 September · 4pm–5pmConfident

4pm–5pm — dried off since a shower 1 hour ago, ground firm

Marginal:Grass wetness: Grass drydried off since a shower 1 hour ago
Good:Ground firmness: Ground firm36mm rain over the last week
Good:Growth: Growing wellgrowth potential 0.94
Good:Temperature: Temperature16°C
Good:Wind: Wind light8 km/h
Sociable hours: Fine by the neighboursstarts once the rain has passed

Limiting factor:none

Thursday 3 September · 9am–8pmConfident

9am–8pm — grass dry — rain earlier today

Good:Grass wetness: Grass dryrain earlier today
Good:Ground firmness: Ground firm38mm rain over the last week
Good:Growth: Growing wellgrowth potential 1.00
Good:Temperature: Temperature18°C
Good:Wind: Wind light9 km/h
Sociable hours: A bit early or late, but finestarts once the dew has burnt off

Limiting factor:grass wetness

Friday 4 September · 2pm–8pmConfident

2pm–8pm — dried off since a shower 1 hour ago, ground firm

Marginal:Grass wetness: Grass drydried off since a shower 0 hours ago
Good:Ground firmness: Ground firm33mm rain over the last week
Good:Growth: Growing wellgrowth potential 0.98
Good:Temperature: Temperature20°C
Good:Wind: Wind light20 km/h
Sociable hours: Fine by the neighboursstarts once the rain has passed

Limiting factor:none

Saturday 5 September · 8am–8pmConfident

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

Good:Grass wetness: Grass dryrain earlier today
Good:Ground firmness: Ground firm32mm rain over the last week
Good:Growth: Growing wellgrowth potential 0.79
Good:Temperature: Temperature10°C
Good:Wind: Wind light5 km/h
Sociable hours: A bit early or late, but finestarts when it stops being antisocial

Limiting factor:none

Sunday 6 September · 10am–5pmReasonably confident

10am–5pm — 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 wellgrowth potential 0.96
Good:Temperature: Temperature16°C
Good:Wind: Wind light6 km/h
Sociable hours: Fine by the neighboursstarts once the dew has burnt off

Limiting factor:none

Monday 7 September · 8am–8pmReasonably confident

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

Good:Grass wetness: Grass dryrain earlier today
Good:Ground firmness: Ground firm12mm rain over the last week
Good:Growth: Growing wellgrowth potential 0.80
Good:Temperature: Temperature12°C
Good:Wind: Wind light6 km/h
Sociable hours: A bit early or late, but finestarts when it stops being antisocial

Limiting factor:none

Tuesday 8 September · 10am–11amReasonably confident

10am–11am — grass slightly damp — rain 3 hours ago

Poor:Grass wetness: Grass slightly dampraining now
Marginal:Ground firmness: Ground soft in places10mm rain over the last week
Good:Growth: Growing wellgrowth potential 0.75
Good:Temperature: Temperature14°C
Good:Wind: Wind light9 km/h
Sociable hours: Fine by the neighboursstarts once the dew has burnt off

Limiting factor:grass wetness

Wednesday 9 September · 2pm–8pmReasonably confident

2pm–8pm — ground soft in places — 33mm rain over the last week

Good:Grass wetness: Grass drydried off since a shower 0 hours ago
Marginal:Ground firmness: Ground soft in places33mm rain over the last week
Good:Growth: Growing wellgrowth potential 0.51
Good:Temperature: Temperature11°C
Good:Wind: Wind light20 km/h
Sociable hours: Fine by the neighboursstarts once the rain has passed

Limiting factor:ground firmness

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

8am–8pm — growing slowly — growth potential 0.35

Good:Grass wetness: Grass dryrain earlier today
Good:Ground firmness: Ground firm34mm rain over the last week
Marginal:Growth: Growing slowlygrowth potential 0.35
Good:Temperature: Temperature11°C
Good:Wind: Wind light4 km/h
Sociable hours: A bit early or late, but finestarts when it stops being antisocial

Limiting factor:growth

Friday 11 September · 8am–8pmLow confidence this far out

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

Good:Grass wetness: Grass dryno rain since Wednesday
Good:Ground firmness: Ground firm31mm rain over the last week
Good:Growth: Growing wellgrowth potential 0.61
Good:Temperature: Temperature11°C
Good:Wind: Wind light10 km/h
Sociable hours: A bit early or late, but finestarts when it stops being antisocial

Limiting factor:none

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