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SunnyDays

ERA5 almanac comparison — 8 years of real data

Albuquerque vs Charleston: weather in May

Albuquerque is the clear winner for sun in May: 79% of days historically clear versus just 37% in Charleston — a 42-point gap across 8 years of ERA5 data. Charleston also sees measurably more rain than Albuquerque this month (40% vs 9% of days). This isn't close.

What you are reading: 8-year historical averages, not a forecast. Either destination can still surprise you this specific May. For the actual forecast right now, each destination links to its live page below.

Albuquerque

NM

Clear days, May
79%
Sample size
n=248 days
Avg high
82°F
Early May (1st–15th)
76%
Late May (16th–end)
81%
Rain frequency
9% of days

Charleston

SC

Clear days, May
37%
Sample size
n=248 days
Avg high
80°F
Early May (1st–15th)
44%
Late May (16th–end)
31%
Rain frequency
40% of days
See the live forecast →

Frequently asked

Is Albuquerque or Charleston warmer in May?

Albuquerque runs warmer by day in May. Albuquerque averages highs of 82°F (highs n=248 days); Charleston averages highs of 80°F (highs n=248 days) (ERA5 2018–2025). Historical averages, not a forecast.

Does it rain more in Albuquerque or Charleston in May?

Charleston is measurably wetter than Albuquerque. Days with measurable rain: Albuquerque 9%, Charleston 40% (n=248 and n=248 days). ERA5 2018–2025; historical, not a forecast.

Which is sunnier in May, Albuquerque or Charleston?

Albuquerque is the clear winner for sun in May: 79% of days historically clear versus just 37% in Charleston — a 42-point gap across 8 years of ERA5 data. Charleston also sees measurably more rain than Albuquerque this month (40% vs 9% of days). This isn't close.

Compare Albuquerque vs Charleston in another month

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 forecast for any destination is on its own page and may differ from the long-run average. Data from Open-Meteo.