| Month | Day and Species | Early / Median ▲ / Late for 2007-25* and 2021 ⦿ |
|---|---|---|
| January | 24th Red Admiral | 24 Jan
1 Jan 07
24 Jan 21
|
| February | 5th Peacock | 5 Feb
1 Jan 13
5 Feb 21
|
| 20th Speckled Wood | 20 Feb
7 Feb 23
6 Apr 15
| |
| 20th Brimstone | 20 Feb
2 Jan 14
5 Mar 13
| |
| 26th Small Tortoiseshell | 26 Feb
1 Jan 13
3 Mar 11
| |
| 26th Comma | 26 Feb
2 Jan 14
15 Mar 10
| |
| 28th Large Tortoiseshell* UK First | 28 Feb
19 Feb 22
14 Jul 08
| |
| March | 16th Small White | 16 Mar
11 Feb 09
8 Apr 10
|
| 19th Large White | 19 Mar
6 Mar 25
15 Apr 08
| |
| 29th Painted Lady | 29 Mar
1 Jan 13
6 May 08
| |
| 30th Holly Blue | 30 Mar
10 Feb 22
23 Apr 13
| |
| 30th Orange-tip | 30 Mar
17 Feb 22
20 Apr 13
| |
| 30th Small Copper | 30 Mar
30 Mar 19
15 May 13
| |
| April | 1st Green-veined White | 1 Apr
18 Feb 22
20 Apr 13
|
| 1st Green Hairstreak* UK First | 1 Apr
30 Mar 19
3 May 13
| |
| 11th Grizzled Skipper* UK First | 11 Apr
24 Mar 12
29 Apr 23
| |
| 20th Dingy Skipper | 20 Apr
6 Apr 12
6 May 13
| |
| 20th Wall | 20 Apr
29 Mar 14
22 May 13
| |
| 21st Small Heath | 21 Apr
6 Apr 12
16 May 13
| |
| 23rd Common Blue | 23 Apr
17 Apr 25
22 May 13
| |
| 26th Pearl-bordered Fritillary | 26 Apr
11 Apr 25
6 May 13
| |
| 30th Clouded Yellow | 30 Apr
21 Mar 22
23 Jul 12
| |
| May | 4th Brown Argus | 4 May
21 Apr 22
29 May 13
|
| 5th Small Blue | 5 May
26 Apr 22
22 May 13
| |
| 7th Duke of Burgundy | 7 May
16 Apr 07
7 May 21
| |
| 11th Adonis Blue | 11 May
24 Apr 07
23 May 13
| |
| 12th Wood White | 12 May
26 Apr 09
29 May 24
| |
| 28th Small Pearl-bordered Fritillary | ||
| 31st Large Skipper | 31 May
8 May 11
14 Jun 13
| |
| June | 8th Meadow Brown | 8 Jun
8 May 25
19 Jun 13
|
| 13th Black Hairstreak | 13 Jun
21 May 19
13 Jun 21
| |
| 13th Silver-studded Blue | 13 Jun
26 May 11
19 Jun 13
| |
| 15th Silver-washed Fritillary | 15 Jun
4 Jun 11
6 Jul 13
| |
| 17th Marbled White | 17 Jun
2 Jun 25
30 Jun 13
| |
| 20th Small Skipper | 20 Jun
19 May 11
3 Jul 13
| |
| 23rd Ringlet | 23 Jun
3 Jun 19
29 Jun 13
| |
| 23rd Purple Emperor | 23 Jun
15 Jun 17
10 Jul 13
| |
| 24th Gatekeeper | 24 Jun
30 May 11
9 Jul 13
| |
| 26th White Admiral | 26 Jun
2 Jun 11
29 Jun 13
| |
| July | 1st Essex Skipper | 1 Jul
14 Jun 11
14 Jul 13
|
| 1st White-letter Hairstreak | 1 Jul
2 Jun 25
10 Jul 13
| |
| 4th Purple Hairstreak | 4 Jul
15 May 11
10 Jul 13
| |
| 4th Chalk Hill Blue* UK First | 4 Jul
24 Jun 22
16 Jul 15
| |
| 8th Long-tailed Blue | 8 Jul
6 Jan 19
5 Aug 24
| |
| 13th Silver-spotted Skipper | 13 Jul
6 Jul 23
26 Jul 13
| |
| 21st Grayling | 21 Jul
9 Jul 09
26 Jul 13
| |
| 31st Brown Hairstreak | 31 Jul
2 Jul 22
5 Aug 12
|
*National first / *Ex 2020 (Covid/lockdown)
