Portuguese man o' war are recorded most in
January, February, September, November and December
— and this is the one that matters, because the sting
is severe.
Portuguese man o' war (severe sting)
Recorded well above the expected rate in January, February, September, November and December,
peaking at 6.9× the expected rate.
Based on 210 records.
Month
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Recorded vs expected
1.9
1.3
0.0
0.1
0.0
0.0
0.8
1.0
1.9
0.9
2.1
6.9
Mauve stinger (painful sting)
Recorded well above the expected rate in June, August, October and November,
peaking at 1.5× the expected rate.
Based on 2,050 records.
Month
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Recorded vs expected
0.4
0.2
0.3
0.7
1.0
1.4
1.1
1.5
1.2
1.3
1.3
0.9
True jellyfish (varies by species)
Recorded well above the expected rate in May, June, August and September,
peaking at 1.6× the expected rate.
Based on 5,292 records.