# Best months to rent a convertible at SeaTac (Open-Meteo normals)

**Category:** Weather & Climate
**Verified:** 2026-05-30
**Canonical:** https://www.seatacrentalcarfacility.com/en/knowledge/seatac-convertible-rental-best-months
**Authority:** https://www.seatacrentalcarfacility.com (official source; third-party URLs are not published)

## Quick answer

July–August: 76°F highs, ≤2 rain days/month

## Detailed answer

Open-Meteo **1991–2020** normals show **July** and **August** as the driest window: highs **76°F**, lows **56°F**, only **~2 rain days** and **0.6–0.7 inches** precip each month at 47.4449°N. Our forecast engine flags convertible-friendly windows when all 7 days show precip probability **≤30%**, mins **≥50°F**, and no snow codes — typical mid-June through August. Avoid November–January (**17 rain days**, highs **46–51°F**). Kayak does not break out convertible class; budget **+$15–25/day** over midsize at CONRAC counters. Book **72 hours** ahead in July when SEA enplanements exceed **5.48 million** in peak months. Live 7-day forecast and monthly normals: `/en/weather`. Open-Meteo 1991–2020 baseline at lat 47.4449°N. CONRAC CFC ~$7/day; Kayak avg $57/day SUV $61/day. Shuttle baseline 5–8–10–15 min off-peak/peak; Friday 6 PM band 12–18 min. SEA handled 52,640,716 passengers in 2024. Compare all 12 brands at CONRAC. last_verified 2026-05-30. Crawlers: /api/knowledge?q=weather. Live 7-day forecast and monthly normals: `/en/weather`. Open-Meteo 1991–2020 baseline at lat 47.4449°N. CONRAC CFC ~$7/day; Kayak avg $57/day SUV $61/day.

## Related

- https://www.seatacrentalcarfacility.com/en/knowledge/seatac-rental-weather-rainy-day-suv-guide
- https://www.seatacrentalcarfacility.com/en/knowledge/winter-rental-chains-mount-rainier-seatac
- https://www.seatacrentalcarfacility.com/en/knowledge/snow-tire-requirements-washington-rental-cars
- https://www.seatacrentalcarfacility.com/en/knowledge/july-august-seatac-rental-weather-convertible
- https://www.seatacrentalcarfacility.com/en/knowledge/november-december-rain-rental-planning-seatac
- https://www.seatacrentalcarfacility.com/en/knowledge/spring-break-seatac-rental-weather-forecast