| Month | Day and Species | Early / Median ▲ / Late for 2007-25* and 2024 ⦿ |
|---|---|---|
| January | 1st Red Admiral* UK First | 1 Jan
1 Jan 07
24 Jan 21
|
| 24th Small Tortoiseshell | 24 Jan
1 Jan 13
3 Mar 11
| |
| 26th Brimstone | 26 Jan
2 Jan 14
5 Mar 13
| |
| 26th Comma | 26 Jan
2 Jan 14
15 Mar 10
| |
| 26th Peacock | 26 Jan
1 Jan 13
5 Feb 21
| |
| February | 1st Painted Lady | 1 Feb
1 Jan 13
6 May 08
|
| 16th Speckled Wood | 16 Feb
7 Feb 23
6 Apr 15
| |
| March | 8th Large Tortoiseshell | 8 Mar
19 Feb 22
14 Jul 08
|
| 20th Large White | 20 Mar
6 Mar 25
15 Apr 08
| |
| 20th Orange-tip | 20 Mar
17 Feb 22
20 Apr 13
| |
| 20th Holly Blue | 20 Mar
10 Feb 22
23 Apr 13
| |
| 20th Green-veined White | 20 Mar
18 Feb 22
20 Apr 13
| |
| 20th Small White | 20 Mar
11 Feb 09
8 Apr 10
| |
| April | 6th Green Hairstreak | 6 Apr
30 Mar 19
3 May 13
|
| 13th Small Copper | 13 Apr
30 Mar 19
15 May 13
| |
| 14th Grizzled Skipper* UK First | 14 Apr
24 Mar 12
29 Apr 23
| |
| 20th Wall | 20 Apr
29 Mar 14
22 May 13
| |
| 24th Small Heath | 24 Apr
6 Apr 12
16 May 13
| |
| 29th Dingy Skipper | 29 Apr
6 Apr 12
6 May 13
| |
| 29th Duke of Burgundy | 29 Apr
16 Apr 07
7 May 21
| |
| 30th Clouded Yellow | 30 Apr
21 Mar 22
23 Jul 12
| |
| May | 4th Pearl-bordered Fritillary | 4 May
11 Apr 25
6 May 13
|
| 7th Common Blue | 7 May
17 Apr 25
22 May 13
| |
| 10th Small Blue | 10 May
26 Apr 22
22 May 13
| |
| 11th Brown Argus | 11 May
21 Apr 22
29 May 13
| |
| 17th Adonis Blue | 17 May
24 Apr 07
23 May 13
| |
| 24th Small Pearl-bordered Fritillary | 24 May
28 Apr 11
3 Jun 23
| |
| 25th Meadow Brown | 25 May
8 May 25
19 Jun 13
| |
| 26th Large Skipper | 26 May
8 May 11
14 Jun 13
| |
| 29th Wood White | 29 May
26 Apr 09
29 May 24
| |
| June | 4th Black Hairstreak | 4 Jun
21 May 19
13 Jun 21
|
| 8th Marbled White | 8 Jun
2 Jun 25
30 Jun 13
| |
| 9th Ringlet | 9 Jun
3 Jun 19
29 Jun 13
| |
| 9th White-letter Hairstreak | 9 Jun
2 Jun 25
10 Jul 13
| |
| 11th Silver-studded Blue | 11 Jun
26 May 11
19 Jun 13
| |
| 16th Gatekeeper | 16 Jun
30 May 11
9 Jul 13
| |
| 16th Purple Hairstreak | 16 Jun
15 May 11
10 Jul 13
| |
| 18th White Admiral | 18 Jun
2 Jun 11
29 Jun 13
| |
| 20th Small Skipper | 20 Jun
19 May 11
3 Jul 13
| |
| 21st Dark Green Fritillary | 21 Jun
30 May 22
21 Jun 24
| |
| 23rd Silver-washed Fritillary | 23 Jun
4 Jun 11
6 Jul 13
| |
| 23rd Purple Emperor | 23 Jun
15 Jun 17
10 Jul 13
| |
| 27th Essex Skipper | 27 Jun
14 Jun 11
14 Jul 13
| |
| July | 10th Chalk Hill Blue | 10 Jul
24 Jun 22
16 Jul 15
|
| 18th Brown Hairstreak | 18 Jul
2 Jul 22
5 Aug 12
| |
| 21st Grayling | 21 Jul
9 Jul 09
26 Jul 13
| |
| 23rd Silver-spotted Skipper | 23 Jul
6 Jul 23
26 Jul 13
| |
| 28th Swallowtail | 28 Jul
7 May 18
22 Aug 09
| |
| August | 5th Long-tailed Blue | 5 Aug
6 Jan 19
5 Aug 24
|
*National first / *Ex 2020 (Covid/lockdown)
