Cadiz or Algarve in September?
On climate data, Cadiz comes out ahead overall in September. See the per-criterion details below.
CadizPhoto: Benjamin Smith · CC BY-SA 4.0
AlgarvePhoto: Eurico Craveiro · CC BY-SA 4.0Key figures in September
| Criterion | Cadiz | Algarve |
|---|---|---|
| Average daily high | 26 °C | 25 °C |
| Average daily low | 20 °C | 19 °C |
| Sea | 22 °C ★ | 21 °C |
| Rainy days | 4 rainy days (est.) | 3 rainy days (est.) ★ |
| Sun | 7 h/day | 7 h/day |
| Humidity | 71 % | 71 % |
Winner by travel type
Cadiz or Algarve in September: the short answer
In September, Cadiz comes out ahead on the overall climate score (Cadiz 91/100 vs Algarve 90/100). That is a snapshot of one month, though — which one truly fits depends on what you want from the trip, so the breakdown below goes criterion by criterion.
This comparison focuses on September as a representative month for the pair; for any other month, use each destination's month-by-month pages. Across the whole year Cadiz averages a climate score of 72/100, Algarve 72/100. Both profiles below are historical monthly averages, not a forecast.
Weather in September, side by side
The average daily high is about 26 °C in Cadiz and 25 °C in Algarve — warmer in Cadiz. Average daily lows are around 20 °C versus 19 °C.
On rain, Cadiz sees about 4 rainy days in September and Algarve about 3 — drier in Algarve. Sunshine is comparable (7 vs 7 hours a day).
Sea temperature and swimming
In September the water is about 22 °C at Cadiz and 21 °C at Algarve — warmer for swimming at Cadiz. Over the year, Cadiz is comfortable for swimming (from ~21 °C) in July, August and September, Algarve in August and September. Peak sea warmth is August for Cadiz and August for Algarve.
Rain and sun across the year
Over a full year Cadiz records roughly 69 rainy days and Algarve about 66 — the drier of the two overall is Algarve. At their sunniest, Cadiz reaches about 10 hours of sun a day (July) and Algarve about 10 (July). If dependable dry, sunny weather is your top priority, weigh these annual totals alongside the single month above.
Best time to visit each
Climatically, Cadiz is at its best in June, July, August and September, while Algarve peaks in June, July, August and September. If your dates are fixed, pick the destination whose strong season overlaps them; if you are flexible, plan around these windows.
Which suits which kind of trip
Based on the September scores for each travel style:
Beach & swimming: Cadiz scores higher in September (Cadiz 94 vs Algarve 90).
City breaks: Algarve scores higher in September (Cadiz 92 vs Algarve 95).
Active & hiking: Algarve scores higher in September (Cadiz 80 vs Algarve 83).
Family: Cadiz scores higher in September (Cadiz 95 vs Algarve 92).
Verdict: which should you pick?
Choose using the September values and travel-style scores above. The rounded annual overall scores are also tied (72/100). A higher annual score therefore cannot decide the choice. Use the monthly values for your actual travel dates.