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Fort Myers, Florida climate
Am Tropical monsoon
Fort Myers has a mildly seasonal tropical climate (Tropical monsoon, Köppen Am). The hottest month is August with an average daily high near 33°C, while the coldest is January averaging around 12°C at night. Precipitation totals about 1458 mm a year and is strongly seasonal — August alone averages 265 mm while February barely receives 45 mm.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresClear vs cloudy days
Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day countsFort Myers climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 24 | 26 | 27 | 30 | 32 | 33 | 33 | 33 | 32 | 30 | 27 | 25 |
| Avg temp (°C) | 18 | 20 | 21 | 24 | 26 | 28 | 28 | 29 | 28 | 26 | 22 | 20 |
| Avg low (°C) | 12 | 14 | 15 | 18 | 21 | 23 | 24 | 24 | 24 | 21 | 17 | 14 |
| Precipitation (mm) | 62 | 45 | 53 | 62 | 88 | 245 | 238 | 265 | 229 | 78 | 45 | 48 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 24 | 26 | 27 | 30 | 32 | 33 |
| Avg temp (°C) | 18 | 20 | 21 | 24 | 26 | 28 |
| Avg low (°C) | 12 | 14 | 15 | 18 | 21 | 23 |
| Precipitation (mm) | 62 | 45 | 53 | 62 | 88 | 245 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 33 | 33 | 32 | 30 | 27 | 25 |
| Avg temp (°C) | 28 | 29 | 28 | 26 | 22 | 20 |
| Avg low (°C) | 24 | 24 | 24 | 21 | 17 | 14 |
| Precipitation (mm) | 238 | 265 | 229 | 78 | 45 | 48 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 6 | 5 | 5 | 5 | 8 | 16 | 18 | 18 | 16 | 8 | 4 | 5 |
| Days with high ≥ 32°C (days) | — | 0.0 | 0.7 | 5 | 17 | 22 | 25 | 25 | 20 | 7 | 0.5 | 0.0 |
| Days with low ≤ 0°C (days) | 0.2 | 0.0 | — | — | — | — | — | — | — | — | — | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 6 | 5 | 5 | 5 | 8 | 16 |
| Days with high ≥ 32°C (days) | — | 0.0 | 0.7 | 5 | 17 | 22 |
| Days with low ≤ 0°C (days) | 0.2 | 0.0 | — | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 18 | 18 | 16 | 8 | 4 | 5 |
| Days with high ≥ 32°C (days) | 25 | 25 | 20 | 7 | 0.5 | 0.0 |
| Days with low ≤ 0°C (days) | — | — | — | — | — | — |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 47 | 45 | 43 | 43 | 45 | 60 | 60 | 59 | 59 | 46 | 40 | 44 |
| Clear days (≤ 30% cloud) | 11 | 10 | 12 | 11 | 11 | 4 | 3 | 3 | 5 | 12 | 14 | 12 |
| Partly cloudy days (30–70%) | 13 | 12 | 13 | 14 | 14 | 14 | 18 | 18 | 14 | 11 | 10 | 13 |
| Cloudy days (≥ 70%) | 8 | 6 | 6 | 5 | 7 | 12 | 10 | 10 | 11 | 8 | 5 | 6 |
| Relative humidity (%) | 81 | 79 | 76 | 73 | 72 | 78 | 79 | 80 | 83 | 82 | 82 | 82 |
| Wind speed (km/h) | 11.1 | 10.7 | 11.2 | 10.6 | 9.2 | 7.7 | 6.8 | 7.3 | 8.6 | 10.8 | 11.3 | 10.6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 47 | 45 | 43 | 43 | 45 | 60 |
| Clear days (≤ 30% cloud) | 11 | 10 | 12 | 11 | 11 | 4 |
| Partly cloudy days (30–70%) | 13 | 12 | 13 | 14 | 14 | 14 |
| Cloudy days (≥ 70%) | 8 | 6 | 6 | 5 | 7 | 12 |
| Relative humidity (%) | 81 | 79 | 76 | 73 | 72 | 78 |
| Wind speed (km/h) | 11.1 | 10.7 | 11.2 | 10.6 | 9.2 | 7.7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 60 | 59 | 59 | 46 | 40 | 44 |
| Clear days (≤ 30% cloud) | 3 | 3 | 5 | 12 | 14 | 12 |
| Partly cloudy days (30–70%) | 18 | 18 | 14 | 11 | 10 | 13 |
| Cloudy days (≥ 70%) | 10 | 10 | 11 | 8 | 5 | 6 |
| Relative humidity (%) | 79 | 80 | 83 | 82 | 82 | 82 |
| Wind speed (km/h) | 6.8 | 7.3 | 8.6 | 10.8 | 11.3 | 10.6 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at FT Myers Page Fld AP (NOAA GHCN station USW00012835), about 5 km from the city centre.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.