FungRadar

Foraging forecast: West Sussex

Conditions in West Sussex in September 2026 are middling, index 44 out of 100; of the species we model, penny bun is closest to its flush. There will be something, but you will have to look: check which of the coming days reads higher and go then.

A seven-day index for the species whose records are confirmed here — 25 of them right now. Flush phases and the factors behind the number, instead of a "chance of finding" percentage we cannot measure. Data updated 17 September 2026, 11:22 BST.

The map is built from the measurement network — one point per sizeable town and more in between. A detailed 2.5 km grid is computed for one region so far: it needs its own run for every cell.

Biting insects: mosquitoes — noticeable. What to bring.

Best today

Penny Bun

Boletus edulis

Startingconfidence 46%

Flush phase

  1. Quiet
  2. Starting
  3. Building
  4. Peak
  5. Fading

Updated 17 September 2026, 11:22 BST

Map

Where to look: West Sussex

Values are computed at measurement points and interpolated between them. Clicking a point opens that town.

Open the interactive map

By species

The week, species by species

Each row is its own seven days. Today is outlined.

Penny Bun — botanical illustration

Penny Bun

Boletus edulis

Starting44 today

Week's best 44 — on Thursdayaverage 40by the weekend falling

Conditions are poor: even the week's best day only reaches «slow».

  1. Today4417 Sept
  2. Fri4218 Sept
  3. Sat4219 Sept
  4. Sun4220 Sept
  5. Mon4121 Sept
  6. Tue3622 Sept
  7. Wed3623 Sept
Honey Fungus — botanical illustration

Honey Fungus

Armillaria mellea

Starting35 today

Week's best 35average 33by the weekend steady

Conditions stay poor all week — not worth the trip yet.

  1. Today3517 Sept
  2. Fri3418 Sept
  3. Sat3319 Sept
  4. Sun3320 Sept
  5. Mon3421 Sept
  6. Tue3222 Sept
  7. Wed3223 Sept
Weeping Bolete — botanical illustration

Weeping Bolete

Suillus granulatus

Starting40 today

Week's best 40average 38by the weekend steady

Conditions stay poor all week — not worth the trip yet.

  1. Today4017 Sept
  2. Fri3818 Sept
  3. Sat3819 Sept
  4. Sun3720 Sept
  5. Mon3821 Sept
  6. Tue3622 Sept
  7. Wed3623 Sept
Oyster Mushroom — botanical illustration

Oyster Mushroom

Pleurotus ostreatus

Quiet0 today

Week's best 0average 0by the weekend steady

Conditions stay poor all week — not worth the trip yet.

  1. Today017 Sept
  2. Fri018 Sept
  3. Sat019 Sept
  4. Sun020 Sept
  5. Mon021 Sept
  6. Tue022 Sept
  7. Wed023 Sept
Velvet Shank — botanical illustration

Velvet Shank

Flammulina velutipes

Quiet0 today

Week's best 0average 0by the weekend steady

Conditions stay poor all week — not worth the trip yet.

  1. Today017 Sept
  2. Fri018 Sept
  3. Sat019 Sept
  4. Sun020 Sept
  5. Mon021 Sept
  6. Tue022 Sept
  7. Wed023 Sept
Brown Birch Bolete — botanical illustration

Brown Birch Bolete

Leccinum scabrum

Starting40 today

Week's best 40 — on Thursdayaverage 36by the weekend falling

Conditions are poor: even the week's best day only reaches «slow».

  1. Today4017 Sept
  2. Fri3818 Sept
  3. Sat3719 Sept
  4. Sun3620 Sept
  5. Mon3621 Sept
  6. Tue3322 Sept
  7. Wed3423 Sept
Orange Oak Bolete — botanical illustration

Orange Oak Bolete

Leccinum aurantiacum

Starting40 today

Week's best 40 — on Thursdayaverage 37by the weekend falling

Conditions are poor: even the week's best day only reaches «slow».

  1. Today4017 Sept
  2. Fri3818 Sept
  3. Sat3819 Sept
  4. Sun3720 Sept
  5. Mon3721 Sept
  6. Tue3322 Sept
  7. Wed3423 Sept
Chanterelle — botanical illustration

Chanterelle

Cantharellus cibarius

Starting36 today

Week's best 36 — on Thursdayaverage 33by the weekend falling

Conditions are poor: even the week's best day only reaches «slow».

  1. Today3617 Sept
  2. Fri3418 Sept
  3. Sat3319 Sept
  4. Sun3320 Sept
  5. Mon3221 Sept
  6. Tue3022 Sept
  7. Wed3123 Sept
Lactarius resimus — botanical illustration

Lactarius resimus

Lactarius resimus

Starting35 today

Week's best 35 — on Thursdayaverage 32by the weekend falling

Conditions are poor: even the week's best day only reaches «slow».

  1. Today3517 Sept
  2. Fri3418 Sept
  3. Sat3319 Sept
  4. Sun3320 Sept
  5. Mon3421 Sept
  6. Tue2822 Sept
  7. Wed2823 Sept
Saffron Milkcap — botanical illustration

Saffron Milkcap

Lactarius deliciosus

Starting38 today

Week's best 38 — on Thursdayaverage 36by the weekend falling

Conditions are poor: even the week's best day only reaches «slow».

  1. Today3817 Sept
  2. Fri3818 Sept
  3. Sat3719 Sept
  4. Sun3620 Sept
  5. Mon3821 Sept
  6. Tue3322 Sept
  7. Wed3223 Sept
Bay Bolete — botanical illustration

Bay Bolete

Imleria badia

Starting44 today

Week's best 44 — on Thursdayaverage 40by the weekend falling

Conditions are poor: even the week's best day only reaches «slow».

  1. Today4417 Sept
  2. Fri4218 Sept
  3. Sat4119 Sept
  4. Sun4020 Sept
  5. Mon4021 Sept
  6. Tue3522 Sept
  7. Wed3623 Sept
Sheathed Woodtuft — botanical illustration

Sheathed Woodtuft

Kuehneromyces mutabilis

Starting32 today

Week's best 32 — on Thursdayaverage 28by the weekend falling

Conditions are poor: even the week's best day only reaches «slow».

  1. Today3217 Sept
  2. Fri2918 Sept
  3. Sat2919 Sept
  4. Sun2820 Sept
  5. Mon2821 Sept
  6. Tue2622 Sept
  7. Wed2723 Sept
Field Blewit — botanical illustration

Field Blewit

Collybia personata

Quiet21 today

Week's best 21average 20by the weekend steady

Conditions stay poor all week — not worth the trip yet.

  1. Today2117 Sept
  2. Fri2018 Sept
  3. Sat2019 Sept
  4. Sun1920 Sept
  5. Mon2021 Sept
  6. Tue1922 Sept
  7. Wed1823 Sept
Wood Blewit — botanical illustration

Wood Blewit

Collybia nuda

Starting27 today

Week's best 27average 26by the weekend steady

Conditions stay poor all week — not worth the trip yet.

  1. Today2717 Sept
  2. Fri2618 Sept
  3. Sat2619 Sept
  4. Sun2520 Sept
  5. Mon2721 Sept
  6. Tue2522 Sept
  7. Wed2423 Sept
Field Mushroom — botanical illustration

Field Mushroom

Agaricus campestris

Starting34 today

Week's best 34average 31by the weekend steady

Conditions stay poor all week — not worth the trip yet.

  1. Today3417 Sept
  2. Fri3218 Sept
  3. Sat3119 Sept
  4. Sun3020 Sept
  5. Mon3021 Sept
  6. Tue3022 Sept
  7. Wed3023 Sept
Fairy Ring Champignon — botanical illustration

Fairy Ring Champignon

Marasmius oreades

Starting32 today

Week's best 32 — on Thursdayaverage 29by the weekend steady

Conditions are poor: even the week's best day only reaches «slow».

  1. Today3217 Sept
  2. Fri2918 Sept
  3. Sat2819 Sept
  4. Sun2820 Sept
  5. Mon2821 Sept
  6. Tue2722 Sept
  7. Wed2823 Sept
Parasol — botanical illustration

Parasol

Macrolepiota procera

Starting40 today

Week's best 40 — on Thursdayaverage 35by the weekend falling

Conditions are poor: even the week's best day only reaches «slow».

  1. Today4017 Sept
  2. Fri3618 Sept
  3. Sat3619 Sept
  4. Sun3520 Sept
  5. Mon3521 Sept
  6. Tue3222 Sept
  7. Wed3223 Sept
Common Puffball — botanical illustration

Common Puffball

Lycoperdon perlatum

Starting31 today

Week's best 31average 28by the weekend steady

Conditions stay poor all week — not worth the trip yet.

  1. Today3117 Sept
  2. Fri2918 Sept
  3. Sat2819 Sept
  4. Sun2720 Sept
  5. Mon2721 Sept
  6. Tue2722 Sept
  7. Wed2823 Sept
Red Cracking Bolete — botanical illustration

Red Cracking Bolete

Xerocomellus chrysenteron

Starting38 today

Week's best 38 — on Thursdayaverage 34by the weekend falling

Conditions are poor: even the week's best day only reaches «slow».

  1. Today3817 Sept
  2. Fri3518 Sept
  3. Sat3519 Sept
  4. Sun3420 Sept
  5. Mon3421 Sept
  6. Tue3022 Sept
  7. Wed3123 Sept
Bovine Bolete — botanical illustration

Bovine Bolete

Suillus bovinus

Starting36 today

Week's best 36 — on Thursdayaverage 32by the weekend falling

Conditions are poor: even the week's best day only reaches «slow».

  1. Today3617 Sept
  2. Fri3318 Sept
  3. Sat3319 Sept
  4. Sun3220 Sept
  5. Mon3221 Sept
  6. Tue2822 Sept
  7. Wed2823 Sept
Milk White Brittlegill — botanical illustration

Milk White Brittlegill

Russula delica

Starting38 today

Week's best 38 — on Thursdayaverage 34by the weekend falling

Conditions are poor: even the week's best day only reaches «slow».

  1. Today3817 Sept
  2. Fri3618 Sept
  3. Sat3519 Sept
  4. Sun3520 Sept
  5. Mon3521 Sept
  6. Tue3022 Sept
  7. Wed3123 Sept
Black Morel — botanical illustration

Black Morel

Morchella elata

Quiet0 today

Week's best 0average 0by the weekend steady

Conditions stay poor all week — not worth the trip yet.

  1. Today017 Sept
  2. Fri018 Sept
  3. Sat019 Sept
  4. Sun020 Sept
  5. Mon021 Sept
  6. Tue022 Sept
  7. Wed023 Sept
Fly Agaric — botanical illustration

Fly Agaric

Amanita muscaria

Starting42 today

Week's best 42 — on Thursdayaverage 39by the weekend falling

Conditions are poor: even the week's best day only reaches «slow».

  1. Today4217 Sept
  2. Fri4018 Sept
  3. Sat3919 Sept
  4. Sun3920 Sept
  5. Mon4021 Sept
  6. Tue3622 Sept
  7. Wed3623 Sept
Panthercap — botanical illustration

Panthercap

Amanita pantherina

Starting40 today

Week's best 40 — on Thursdayaverage 36by the weekend falling

Conditions are poor: even the week's best day only reaches «slow».

  1. Today4017 Sept
  2. Fri3818 Sept
  3. Sat3719 Sept
  4. Sun3720 Sept
  5. Mon3721 Sept
  6. Tue3222 Sept
  7. Wed3323 Sept

Orange Birch Bolete

Leccinum versipelle

Starting40 today

Week's best 40 — on Thursdayaverage 37by the weekend falling

Conditions are poor: even the week's best day only reaches «slow».

  1. Today4017 Sept
  2. Fri3818 Sept
  3. Sat3819 Sept
  4. Sun3720 Sept
  5. Mon3721 Sept
  6. Tue3322 Sept
  7. Wed3423 Sept

Numbers are taken at the measurement point nearest the centre of the region — a real calculation at one place, not an average over the whole area. A town an hour away will read differently, and its own page says so.

Been out in West Sussex? Tell us how it went

No sign-up, five seconds. Reports are visible to everyone and help us check the forecast — where people say “nothing out there” and the model promises a flush, the model is wrong.

How much did you find?
When were you out?

This form does not ask for coordinates. What gets published is the name, the rating and the text — nothing else.

Common questions

Are there mushrooms in West Sussex in September 2026?

Conditions in West Sussex in September 2026 are middling, index 44 out of 100; of the species we model, penny bun is closest to its flush. There will be something, but you will have to look: check which of the coming days reads higher and go then.

Which mushrooms are out in West Sussex right now?

The species list for this region is built from confirmed records in GBIF. As soon as there are enough of them, the species appear here with their own forecast — we do not add a species to a region on a guess.

How is the index calculated?

An index from 0 to 100, built from the last month of weather, satellite woodland data, terrain and the seasonal window of each species. It is not a probability of finding anything: it is how well conditions match what that species needs.

When is the best day to go in West Sussex?

Use the seven-day index on this page: pick the day with the higher number, and watch the flush phase — «Building» and «Peak» are the ones worth the drive. Today reads 44 out of 100.

The index is high but I found nothing — why?

The index reads weather and season — things that are the same for tens of kilometres around. It does not know your particular wood, and that is where the mushroom grows. The usual reasons: wrong trees — every species has its own, and no weather makes up for the wrong stand; the wood was felled recently or is young — the mycelium takes years to recover; the spot is picked out — everything near a road or a car park goes over a weekend; the flush has been taken — you came a day after those who came on time; or the flush passed and slugs and larvae got there first, which the model cannot see. The reverse holds too: a low index does not mean an empty wood. It means the conditions are against you, not that there is nothing there.

How the index is calculated, and what the model cannot promise — on the about page.