Best time for an outdoor wedding in Algarve, Portugal
The reliable window runs 5 Nov to 9 May, when the floor of good outdoor time holds near 12 hours a day (no rain, no oppressive heat, no biting cold). The single most reliable two weeks are 17 Jan – 30 Jan, at a floor of 11 hours a day. The stretch to avoid is 30 May to 7 Sep, when the floor falls away — the limit is oppressive heat. These are floors (held in at least 24 of the last 25 years), not averages — and resolved to the week, and to the hour.
Reliable outdoor hours per day (8am–10pm), week by week. The green band is the reliable window; the red band is the stretch to avoid; the gold marker is the single best fortnight. Source: Forelore analysis of 25 years of NASA & Copernicus satellite record.
The reliability calendar
| Window | Dates | Reliable floor | What to know |
|---|---|---|---|
| Peak fortnight | 17 Jan – 30 Jan | ~11 h/day | The single most reliable two weeks. |
| Reliable window | 5 Nov – 9 May | ~12 h/day | The season to plan an outdoor ceremony in. |
| Falling edge | 10 May – 29 May | turning | Turns over within weeks — book only with a backup. |
| Avoid | 30 May – 7 Sep | low | The limit is oppressive heat. |
| Recovering edge | 8 Sep – 4 Nov | rising | Improving but still variable week to week. |
“Reliable floor” = good outdoor hours (8am–10pm) held in at least 24 of the last 25 years. Dates are the observed edges of each window, resolved to the week.
And within the day — which hours actually hold
A wedding happens at a time, not just a date. At Algarve the reliable hours shift across the day: the evening (6–10pm) is the most reliable time to be outdoors — reliably good about 66% of the block — while the afternoon (14–18) is the weakest. As the season turns, the evening holds best. A sunset ceremony is the most reliable choice.
Share of each daytime block reliably good, week by week. For a specific date, Forelore resolves this to the half-hour — the Inside-the-Day audit.
Why this is different
The edges fall inside the month
Every guide names “the best month.” But a reliable window doesn’t end on a month boundary — it turns over inside the month, which is exactly where a monthly average misleads. We resolve it to the week — and, for a specific date, to the hour.
The level that actually holds
An average hides the year the heat or the rain showed up — the year an outdoor plan fails. Forelore reports the floor: the level of reliably-good outdoor time held in at least 24 of the last 25 years. It’s an audit of the observed record, not a forecast.
Have a specific date or venue in mind?
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Check your date — free →Frequently asked
When is the best time for an outdoor wedding in Algarve?
The reliable window runs 5 Nov to 9 May, and the single most reliable two weeks are 17 Jan – 30 Jan (a floor of about 11 hours a day).
When should you avoid an outdoor wedding in Algarve?
30 May to 7 Sep — the floor falls away and the limit is oppressive heat.
What time of day is best?
The evening (6–10pm) — the most reliable block year-round (about 66% reliable) versus about 38% for the afternoon. A sunset ceremony is the most reliable choice.
Is this by month, or more precise?
To the week, and to the hour of day — the edges fall inside the month, which is exactly where monthly averages mislead.
How is this measured?
From 25 years of NASA GPM IMERG (rain) and Copernicus ERA5-HEAT UTCI (thermal) satellite record. A conservative floor held in at least 24 of the last 25 years — not a typical-year average, and not a forecast.