April brings 22°C daytime highs, 48mm of precipitation across about 4 wet days and 12.7 hours of daylight — best for hiking, cycling and reliable sunshine. The strongest run of the year is March to May. September is the quietest month: quiet and local, and still good for beach days, swimming and quiet and local.
Long-run climate normals for Galveston. Month ratings compare months within Galveston only — they are not a ranking of Galveston against other destinations, and they are not a forecast for a specific year.
Last updated: · Live forecast data refreshes hourly.
| Best month | April — Hiking, Cycling, Reliable sunshine |
| Best 3-month window | March–May |
| Quietest month | September — Quiet and local |
| Driest month | April — 48mm |
| Wettest month | September — 148mm |
| Warmest / coolest | July 33°C / February 16°C |
| Seasonality | Fairly even across the year |
| Annual rainfall | 1232mm over roughly 88 rain days |
September gets roughly 208% more precipitation than April — 148mm against 48mm. That difference, more than temperature, is what changes how a day here feels.
Daytime highs only move 17°C across the whole year (16–33°C), so timing matters far less here than rainfall does.
June gives you 13.9 hours of daylight against just 10.1 in December — a 4-hour difference in how much you can actually fit into a day.
April is the driest month at 48mm across roughly 4 wet days, while September peaks at 148mm.
May is almost as good as April, but usually quieter and cheaper. If your dates are flexible, it is the easier trip.
Galveston stays fairly consistent all year, so there is no month you need to avoid. What you plan to do matters more than when you go.
Ratings compare months within Galveston, not against destinations worldwide: five stars means the best time to be here, not that Galveston beats anywhere else. Tags describe what the conditions actually suit.
| Month | Rating | High / Low | Precipitation | Wet days | Sun | Daylight | Best for |
|---|---|---|---|---|---|---|---|
| January | ★★★☆☆ | 16°C / 8°C | 82mm | 7 | 5h | 10.3h | Hiking · Cycling |
| February | ★★★☆☆ | 16°C / 8°C | 65mm | 5 | 5h | 11h | Hiking · Cycling |
| March | ★★★★☆ | 18°C / 10°C | 62mm | 5 | 5h | 11.8h | Hiking · Cycling · Spring greenery |
| April | ★★★★★ | 22°C / 14°C | 48mm | 4 | 9h | 12.7h | Hiking · Cycling · Reliable sunshine |
| May | ★★★★★ | 27°C / 18°C | 72mm | 6 | 10h | 13.5h | Beach days · Swimming · Reliable sunshine |
| June | ★★★☆☆ | 31°C / 22°C | 138mm | 11 | 11h | 13.9h | Beach days · Swimming |
| July | ★★☆☆☆ | 33°C / 24°C | 88mm | 7 | 5h | 13.7h | Beach days · Swimming · Quiet and local |
| August | ★★☆☆☆ | 33°C / 24°C | 102mm | 8 | 5h | 13h | Beach days · Swimming · Quiet and local |
| September | ★★☆☆☆ | 31°C / 22°C | 148mm | 12 | 5h | 12.2h | Beach days · Swimming · Quiet and local |
| October | ★★☆☆☆ | 27°C / 18°C | 135mm | 11 | 4h | 11.3h | Beach days · Swimming · Quiet and local |
| November | ★★★★☆ | 22°C / 14°C | 78mm | 6 | 6h | 10.5h | Hiking · Cycling |
| December | ★★★☆☆ | 18°C / 10°C | 72mm | 6 | 5h | 10.1h | Hiking · Cycling |
| You are planning | Pick | Why |
|---|---|---|
| Sun & beach days | April | 9h daily sunshine, 22°C highs and only 4 rain days. |
| City walking & sightseeing | April | 22°C highs with 12.7h of daylight — long days without heat fatigue. |
| Photography & light | May | 10h of sun and 13.5h daylight give the widest window for golden-hour work. |
| Value & fewer crowds | March | Scores 72/100 — close to peak conditions but outside the busiest window. |
| Cooler-weather travel | February | 16°C highs and 8°C nights suit anyone who dislikes heat. |
Each month in Galveston is described from long-run climate normals and then rated relative to the other eleven months in the same city. A five-star January in a cold destination means January is one of the best times to be there — not that it beats a Mediterranean summer.
| Factor | Weight | What it measures |
|---|---|---|
| Temperature | Described | Average daytime high and overnight low for the month, shown as measured rather than judged. |
| Precipitation | Described | Monthly millimetres and wet-day count, labelled as snow or rain/snow where temperatures make that the likely phase. |
| Sunshine & daylight | Described | Average daily sunshine hours and astronomical daylight length at mid-month, from the city’s latitude. |
| “Best for” tags | Derived | Applied only when the conditions genuinely support the activity — snow depth-friendly cold for skiing, 13–24°C and low rain risk for hiking, dark evenings at high latitude for aurora. A month with few strong use cases gets fewer tags rather than padded ones. |
| Star rating | Relative | Ranks the month against the other eleven months in the same city. Never a comparison between cities. |
Figures are long-run climate averages, not a forecast for a specific year. Where a month lacks sourced rainfall or humidity, the value is modelled from temperature range and rain frequency.
April is the best all-round month in Galveston: 22°C highs, 48mm of precipitation and 12.7 hours of daylight, which suits hiking, cycling and reliable sunshine. The strongest three-month window is March to May.
September — 31°C highs, 148mm of precipitation over roughly 12 days and 12.2 hours of daylight. It is the cheapest and least crowded time to go, and it still works for beach days, swimming and quiet and local.
April is the driest month at 48mm over about 4 rain days, against 148mm in September. Across the year Galveston records around 1232mm.
Yes — conditions in Galveston stay fairly even all year, so there is no month you need to avoid. What you plan to do matters more than when you go.
Daylight ranges from 10.1 hours in December to 13.9 hours in June, calculated from the city's latitude.