Skip to main content
SunnyDays

ERA5 almanac — 8 years of real data

Austin in February

Austin in February is historically a poor month for sun: only 15% of days clear across 8 years (n=226, avg high 65°F). October is the clearest month for Austin historically. Historical average, not a forecast.

What you are reading: 8-year historical averages from the ERA5 reanalysis, not a forecast. A month that is historically 90% clear can still be overcast on your specific trip. For this week’s actual forecast, see the live Austin page. Both can be true at once: “historically strong in this month; this particular week is not.” We label which is which.

Early vs. Late February

Clear-sky percentage for Austin in February, split by half-month. “n” is the number of days sampled across 8 years (2018–2025).
Period % Clear days Sample (n) Avg high
Early February
1st–15th		 11% n=120 65°F
Late February
16th–end		 20% n=106 65°F
Full month average 15% n=226 65°F

Sunshine & warmth in February

A second measure using actual sunshine hours (ERA5 sunshine_duration), not the daily weather code. A Lowcountry day with 12 hours of sun and a 25-minute afternoon storm is counted below as a warm, sunny day — because it was. How we define this.

Sunshine-based metrics for Austin in February. Primary: % of days ≥ 72°F with > 6 h of sunshine.
Period Warm & sunny (≥72°F, >6 h sun) Sample (n)
Early February
1st–15th		 18% n=120
Late February
16th–end		 26% n=106
Full month average 22% n=226
7.8 h median sunshine per day 45% of days exceed 8 h sunshine 37% of days see ≥ 1 mm rain — rain is not hidden
Comparison (old vs new): WMO-code “clear” bar: 15%. Sunshine-based “warm & sunny”: 22%.

Bottom line

Austin is a poor choice for sun in February: just 15% of days clear historically (n=226). October is the historically strongest month for sun here. The 8-year record is consistent — this is not a fluke bad stretch.

→ See all destinations in October — historically the best month for sun in Austin.

Every month in Austin

Compare across all months with data. Numbers are historical clear-sky %.

Historical clear-sky % for Austin, all months, ERA5 2018–2025.
Month % Clear Sample (n)
January 4% n=248 All destinations →
February ← this page 15% n=226 All destinations →
March 26% n=248 All destinations →
April 35% n=240 All destinations →
May 27% n=248 All destinations →
June 32% n=240 All destinations →
July 47% n=248 All destinations →
August 46% n=248 All destinations →
September 41% n=240 All destinations →
October 48% n=248 All destinations →
November 25% n=240 All destinations →
December 11% n=248 All destinations →

All percentages are historical averages from the ERA5 reanalysis via Open-Meteo, 8 full years (2018–2025). “Clear” means avg high ≥ 72 °F, precipitation < 1 mm, and a non-precipitation weather code. This is history, not a forecast. The live 7-day outlook for any destination is on its own page and may differ from the long-run average. Data from Open-Meteo.