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SunnyDays

ERA5 almanac — 8 years of real data

Best Month to Visit Montage Palmetto Bluff

May — 91% of days are warm (≥72°F) with more than 6 hours of sunshine and rain falls on only 39% of days, measured across 248 May days (ERA5 2018–2025, weather station: Hilton Head, SC, ~15 mi from the property). Average high: 81°F.

Metric changed 2026-08-07: The previous version of this page used the WMO daily weather code, which said October (45%) was the best month. That metric is a worst-moment-of-day indicator: a single brief storm stamps the entire day as rain and July (15%) looks terrible even though it has 12.6 hours of sun. The new metric (pct_warm_sun6) uses ERA5 sunshine_duration directly — not fooled by one storm. Both numbers are correct; they measure different things. The new metric better answers the question a traveller actually asks.

Right now near Montage Palmetto Bluff

📅 Window opens in 2 days — Aug 11–13

Today’s forecast high

86°F

7-day range

74–101°F

Clear days (7-day)

0 of 7

Max rain chance

18%

4 cloudy / 3 wet days, no clear days in 7

August historically has warm+sunny days 90% of the time near Montage Palmetto Bluff (n=248, ERA5 2018–2025, Hilton Head, SC) — and right now, a Aug 11–13 window opens in 2 days at highs around 102°F.

Conditions are for Hilton Head, SC (~15 mi from Montage Palmetto Bluff), sourced from Open-Meteo 7-day forecast. Forecasts are not guarantees; actual conditions vary. The almanac table below is 8-year history.

The finding that matters most: July is the sunniest month here and also the wettest — 95% of days are warm with 6+ hours of sun (n=248), and rain falls on 64% of days. Both are true. The afternoon storms are real; they rarely last all day. The old WMO-code metric called July only 15% "clear" because a single brief storm stamps the whole day as rain — sunshine_duration is not fooled by the code.
What you are reading: 8-year historical averages from the ERA5 reanalysis (Open-Meteo, 2018–2025), not a forecast. A month that is historically 45% clear can still be overcast on your specific trip. Weather data is from Hilton Head, SC, the nearest long-term station (~15 miles from Montage Palmetto Bluff) — the property itself is not an ERA5 almanac station. Every percentage shown includes its sample size.

Month-by-Month Analysis

Historical data near Montage Palmetto Bluff, from Hilton Head, SC (nearest long-term station, ~15 mi away). ERA5 reanalysis, 2018–2025. Warm+sun: % of days ≥72°F with >6h sunshine. Rain: % of days with any precipitation. “n” is total days sampled.

Metric definition: pct_warm_sun6: % of days >= 72F with > 6h sunshine (ERA5 sunshine_duration). Corrects WMO-code bias: daily WMO code is worst-moment-of-day; a brief afternoon storm stamps the whole day as rain. sunshine_duration is not fooled by the code. Computed: 2026-08-07T23:43:27Z. Window: 2018–2025 (8 years).

12-month warm+sunny almanac for Montage Palmetto Bluff area. Best month: May (91% warm+sun, n=248). Rain shown beside sun on every row. This is historical data, not a forecast.
Month Warm+sun % Sun hrs (med) Rain % Avg high Sample (n) Verdict
January 3% 9.5h 27% 58°F n=248 Too cool for the pool
February 17% 10.0h 33% 64°F n=226 Too cool for the pool
March 33% 10.8h 30% 69°F n=248 Mixed — shoulder season
April 68% 12.3h 28% 74°F n=240 Good
May ★ best 91% 12.6h 39% 81°F n=248 Excellent
June 94% 12.6h 52% 86°F n=240 Excellent sun, expect afternoon storms
July 95% 12.6h 64% 88°F n=248 Excellent sun, expect afternoon storms
August 90% 12.2h 66% 86°F n=248 Excellent sun, expect afternoon storms
September 89% 11.6h 50% 83°F n=240 Excellent sun, expect afternoon storms
October 75% 10.7h 24% 77°F n=248 Good
November 32% 9.9h 31% 68°F n=240 Mixed — shoulder season
December 9% 9.2h 27% 62°F n=248 Too cool for the pool
How verdicts are derived (threshold rules)
warm+6h ≥ 85 and rain ≤ 45 → Excellent | warm+6h ≥ 85 and rain > 45 → Excellent sun, expect afternoon storms | warm+6h ≥ 60 → Good | warm+6h ≥ 30 → Mixed — shoulder season | avg high ≥ 65°F → Mild but often grey | otherwise → Too cool for the pool

A second property needs only a data record in PROPERTY_DATA in app/property_best_month_pages.py — verdicts are derived from these thresholds, no new code required.

About Montage Palmetto Bluff

Montage Palmetto Bluff, 5-star resort

Montage Palmetto Bluff

★★★★★ 5-star

(Star rating is provider-supplied, not a review score. No aggregate rating is shown — review count is not available in source data.)

Montage Hotels & Resorts

  • Golf course on site
  • Driving range on site
  • Golf lessons
  • Golf caddy
  • Kayaking on site
  • Tennis on site (4 outdoor courts)
  • 2 outdoor pools
  • Poolside bar
  • Spa (wheelchair-accessible)
  • Fitness facilities
  • Gated community

The mix of outdoor activities — golf, kayaking, tennis — makes weather timing especially important. A clear May day at 81°F with 6+ hours of sunshine is meaningfully different from a thunderstorm-prone August day at 86°F. That is why this page exists.

Method & Provenance

What “warm+sunny” means. pct_warm_sun6: the percentage of days with daily high ≥ 72°F and ERA5 sunshine_duration > 6 hours. Both must be true. This corrects the WMO daily weather-code bias: WMO code is a worst-moment-of-day indicator — a single brief afternoon storm stamps the whole day as rain and shows July at only 15% “clear”. sunshine_duration is not fooled by the code. Full definition (from almanac JSON): pct_warm_sun6: % of days >= 72F with > 6h sunshine (ERA5 sunshine_duration). Corrects WMO-code bias: daily WMO code is worst-moment-of-day; a brief afternoon storm stamps the whole day as rain. sunshine_duration is not fooled by the code. Computed: 2026-08-07T23:43:27Z. Window: 2018–2025 (8 years).

Verdict thresholds. Derived automatically from data — no prose hand-written per property. Rules (first match wins): warm+6h ≥ 85 and rain ≤ 45 → Excellent | warm+6h ≥ 85 and rain > 45 → Excellent sun, expect afternoon storms | warm+6h ≥ 60 → Good | warm+6h ≥ 30 → Mixed — shoulder season | avg high ≥ 65°F → Mild but often grey | otherwise → Too cool for the pool.

Data window. ERA5 reanalysis via Open-Meteo, 8 full years (2018–2025). “n” is the number of days sampled in each month across all 8 years; no month is below n=226.

Weather station substitution. Montage Palmetto Bluff is not one of the 55 long-term ERA5 almanac stations. The nearest station is Hilton Head, SC, approximately 15 miles away. All percentages in the table above are from Hilton Head, SC. This substitution is disclosed so a reader can verify it; the distance is small enough that the data is representative for seasonal planning.

Star rating. The 5-star rating for Montage Palmetto Bluff is provider-supplied from the RouteStack hotel API (measured 2026-08-07). It is a classification, not a review score. No aggregate rating or review count is shown because none was available in the source data.

Frequently Asked Questions

What is the best month to visit Montage Palmetto Bluff?

May is the best month, historically. 91% of May days near Montage Palmetto Bluff are warm (≥72°F) with more than 6 hours of sunshine (n=248, ERA5 2018–2025). Rain falls on 39% of days in May. Average high: 81°F. Weather data is from Hilton Head, SC, the nearest long-term station (~15 miles).

What is the worst month to visit Montage Palmetto Bluff?

January is the worst month for warm+sunny days near Montage Palmetto Bluff: only 3% of days qualify (avg high 58°F, n=248). These bad months are shown in full in the table above — suppressing them would make the good months meaningless.

Is summer a good time to visit Montage Palmetto Bluff?

It depends what you mean. Summer is sunny here — July has 95% warm+sunny days (n=248, avg high 88°F). But it is also the rainiest season: rain falls on 64% of July days and 66% of August days. Afternoon thunderstorms are common from June through September along this coast; they rarely last all day. The old WMO-code metric called July only 15% “clear” — that understated it because a brief storm stamps the whole day as rain. The new metric calls it correctly: extremely sunny, quite rainy.

Does Montage Palmetto Bluff have a hurricane season?

The Atlantic hurricane season runs June through November, peaking in August and September. The 8-year ERA5 historical data (2018–2025) includes all weather patterns across those years, hurricane-season effects included. The elevated rain percentages in summer reflect this. We do not make predictions about specific hurricane risk for individual trips.

What is the price per night at Montage Palmetto Bluff?

No rate is shown here. Live pricing was not available in the source data at the time this page was built (nightly rate was absent from the RouteStack bulk search result). Showing a stale or estimated price would be misleading. Check the hotel directly or via a booking platform for current rates.

All percentages are historical averages from the ERA5 reanalysis via Open-Meteo, 8 full years (2018–2025). “Warm+sunny” means daily high ≥ 72 °F and ERA5 sunshine_duration > 6 hours. This is history, not a forecast. Weather data is from Hilton Head, SC, the nearest long-term ERA5 almanac station (~15 miles from Montage Palmetto Bluff — the property itself is not an almanac station). Data from Open-Meteo.