How reliable is Fernando Luis Ribas Dominicci Airport?
Month-by-month weather risk and connection guidance for Fernando Luis Ribas Dominicci Airport. We don’t yet have on-time performance history here — see why below.
Weather favorability
year-round climate
On-time performance data isn’t available for SIG yet
Our historical on-time and cancellation record currently covers the US, UK, Brazil, and Australia, so we don’t score departure reliability at Fernando Luis Ribas Dominicci Airport yet. Weather climatology below comes from global airport observations and still applies.
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Weather by month
When the weather works for you at San Juan
A calm-weather score (0–100) for each month from decades of airport observations — how often conditions disrupt flying, not temperature. Higher is calmer.
Calmest month
Calmest flying weather of the year · 100/100 favorability
Roughest month
Most disruptive — low visibility & fog, thunderstorms · 93/100 favorability
The read on SIG
What the numbers say about flying through Fernando Luis Ribas Dominicci Airport
PlaneSane doesn't yet have on-time and cancellation history for Fernando Luis Ribas Dominicci Airport, so it isn't scored for departure reliability here — that record currently covers the US, UK, Brazil, and Australia. The weather and connection context below comes from separate global sources and still applies.
On weather, San Juan is an unusually calm-weather airport year-round. January is the calmest stretch for flying, scoring 100 out of 100 for favorable conditions, while June is the most disruptive at 93, driven mainly by low visibility & fog and thunderstorms. The year is relatively steady, so no single month stands out as one to avoid on weather alone.
None of this guarantees your specific flight — it’s the backdrop. To turn it into a booking, score real flights to San Juan, read how we weigh it all in how the PlaneSane Score works, and brush up with how to pick a reliable flight and avoiding weather delays.
Common questions about SIG
- What is the best month to fly from SIG for good weather?
- January has the calmest flying weather at Fernando Luis Ribas Dominicci Airport. June is the most disruptive, mainly from low visibility & fog and thunderstorms.
Planning a trip through San Juan?
Score real flights to and from SIG on reliability, weather, and connection safety — not just price.