Aberystwyth, Wales
Mowing
When you can next cut it, and the best slot this weekend.
Best weekend slot
Sunday 10am–5pm
Verdict: Good
ground soft in places — 27mm rain over the last week
Next mow
Today 2pm–9pm
Verdict: Good
ground soft — 50mm 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 18.2°C cooling to 15.6°C
Thursday 3 September: Good. 2pm–9pm — ground soft — 50mm rain over the last week
Thursday 3 September · 2pm–9pmConfident
2pm–9pm — ground soft — 50mm rain over the last week
- Good:Grass wetness
- Grass dryrain earlier today
- Marginal:Ground firmness
- Ground soft50mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.96
- Good:Temperature
- Temperature18°C
- Good:Wind
- Wind light19 km/h
- Sociable hours
- Fine by the neighbours
Limiting factor:ground firmness
Friday 4 September: Not worth it. No — ground waterlogged.
Friday 4 SeptemberConfident
No — ground waterlogged.
- Good:Grass wetness
- Grass dryrain earlier today
- Marginal:Ground firmness
- Ground soft in places38mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.88
- Good:Temperature
- Temperature17°C
- Good:Wind
- Wind light27 km/h
Limiting factor:grass wetness
Saturday 5 September: Good. 8am–8pm — ground soft in places — 41mm rain over the last week
Saturday 5 September · 8am–8pmConfident
8am–8pm — ground soft in places — 41mm rain over the last week
- Good:Grass wetness
- Grass dryno rain since Friday
- Marginal:Ground firmness
- Ground soft in places41mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.80
- Good:Temperature
- Temperature15°C
- Good:Wind
- Wind light19 km/h
- Sociable hours
- A bit early or late, but finestarts when it stops being antisocial
Limiting factor:ground firmness
Sunday 6 September: Good. 10am–5pm — ground soft in places — 27mm rain over the last week
Sunday 6 September · 10am–5pmConfident
10am–5pm — ground soft in places — 27mm rain over the last week
- Good:Grass wetness
- Grass dryno rain since Friday
- Good:Ground firmness
- Ground soft in places27mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.94
- Good:Temperature
- Temperature17°C
- Good:Wind
- Wind light22 km/h
- Sociable hours
- Fine by the neighboursstarts when it stops being antisocial
Limiting factor:ground firmness
Monday 7 September: Good. 11am–2pm — grass dry — rain earlier today
Monday 7 September · 11am–2pmReasonably confident
11am–2pm — grass dry — rain earlier today
- Poor:Grass wetness
- Grass dryrain earlier today
- Marginal:Ground firmness
- Ground soft in places17mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.73
- Good:Temperature
- Temperature15°C
- Good:Wind
- Wind light22 km/h
- Sociable hours
- Fine by the neighboursstarts once the dew has burnt off
Limiting factor:grass wetness
Tuesday 8 September: Not worth it. No — 0.2mm of rain falling.
Tuesday 8 SeptemberReasonably confident
No — 0.2mm of rain falling.
- Poor:Grass wetness
- Grass wetdew forming, raining now
- Poor:Ground firmness
- Ground saturated25mm rain over the last week
- Good:Growth
- Growing steadilygrowth potential 0.44
- Good:Temperature
- Temperature12°C
- Good:Wind
- Wind light12 km/h
Limiting factor:grass wetness
Wednesday 9 September: Good. No — 0.9mm of rain falling.
Wednesday 9 SeptemberReasonably confident
No — 0.9mm of rain falling.
- Marginal:Grass wetness
- Grass dryrain earlier today
- Poor:Ground firmness
- Ground saturated43mm rain over the last week
- Good:Growth
- Growing steadilygrowth potential 0.46
- Good:Temperature
- Temperature12°C
- Good:Wind
- Wind light21 km/h
Limiting factor:ground firmness
Thursday 10 September: Not worth it. No — 0.6mm of rain falling.
Thursday 10 SeptemberReasonably confident
No — 0.6mm of rain falling.
- Poor:Grass wetness
- Grass wetraining now
- Poor:Ground firmness
- Ground saturated47mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.56
- Good:Temperature
- Temperature12°C
- Good:Wind
- Wind light20 km/h
Limiting factor:grass wetness
Friday 11 September: Not worth it. No — 1.5mm of rain falling.
Friday 11 SeptemberLow confidence this far out
No — 1.5mm of rain falling.
- Poor:Grass wetness
- Grass wetraining now
- Poor:Ground firmness
- Ground saturated64mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.56
- Good:Temperature
- Temperature14°C
- Good:Wind
- Wind light21 km/h
Limiting factor:grass wetness
Saturday 12 September: Not worth it. No — 0.2mm of rain falling.
Saturday 12 SeptemberLow confidence this far out
No — 0.2mm of rain falling.
- Marginal:Grass wetness
- Grass drydried off since a shower 0 hours ago
- Poor:Ground firmness
- Ground saturated78mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.53
- Good:Temperature
- Temperature13°C
- Good:Wind
- Wind light12 km/h
Limiting factor:grass wetness
Growth
How fast it is growing, and when it will need cutting again.
0.96Growing strongly
Growth potential, 0 to 1 — the turf-industry measure of how fast grass can grow at today's temperature and day length.
Putting on about 5.8mm a day. A lawn cut today would be ready for another in around 3 days.
Worked out from the PACE Turf growth potential model and day length —how and why.
What this means right now
Seeding
Soil temperature at germination depth, and when the window opens.
Soil temperature
17.4°C63°F
at 6cm — germination depth
Cooling over the next 10 days.
Seeding conditions are open — soil is 17.4°C at 6cm and holding above 9°C.
Cross-checks against an independent estimate from air temperature (17.6°C), which agrees to within 0.3°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 |
Feeding
Why timing decides whether a feed does anything at all.
Coming in the app
Grass takes up nitrogen when it is growing. Feed a lawn that has stopped and most of it washes past the roots — which is why timing beats product choice.
Right now this lawn is growing well enough to use a feed.
The app will work out the actual feeding windows for your lawn — along with weed control, scarifying and moss treatment — and tell you when they open without you having to check.
Aberystwyth, Wales in detail
Soil temperature at 6cm in Aberystwyth, Wales is currently 17.4°C, and falling about 3.3°C over the next 10 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 17.4°C at 6cm and holding above 9°C.
5 of the next 10 days look workable. The other 5 are held back by wet grass or soft ground. The best weekend slot right now is Sunday 10am–5pm, on the basis that ground soft in places — 27mm rain over the last week.
The next recommended window in Aberystwyth opens at 2pm on Thursday 3 September, and holds while conditions stay put. Underfoot, the ground reads as soft after 50mm rain over the last week.
Forecast from Open-Meteo, refreshed hourly. Soil temperature is modelled, not measured — how that works and where the thresholds come from.