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Annual average humidity for 2025 was 81.6% which is 2.4% above the 2018/24 average. The current linear trend is upward.
Updated 1st January 2026
humidity data
2018-25
Ave
75.1
75.4
75.9
80.1
82.9
85.5
85.2
82.9
79.4
78.2
77.3
76.3
79.5
Year
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Annual
2018
82.2
2019
2020
73.5
71.5
2021
71.9
2022
2023
70.8
80.3
2024
76.5
2025
74.3
2026
80.3
81.6
78.2
70.8
71.5
76.3
73.6
71.8
74.9
76.4
81.5
73.9
72.6
77.7
77.1
75.8
76.5
79.3
80.2
79.4
81.9
84.2
77.7
77.6
80.8
81.0
81.3
84.6
79.4
79.7
84.9
77.8
81.9
82.2
81.5
88.1
82.9
84.2
85.9
88.1
85.1
85.5
88.4
*
*
*
84.9
82.3
77.0
76.3
75.5
85.4
83.0
79.9
82.4
78.2
75.2
76.3
77.1
74.3
76.2
82.4
80.2
78.6
79.6
75.6
84.5
83.0
88.9
83.2
82.5
86.2
79.7
83.7
80.6
75.7
79.5
80.4
79.9
77.4
78.1
88.2
84.1
81.3
81.1
81.2
*
*
*
*
*
73.3
78.3
73.0
77.3
70.5
77.0
76.5
78.0
78.3
78.7
80.1
81.8
77.4
81.0
77.7
81.6
*
79.9
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