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San Sebastian Weather in January
January in San Sebastian brings high temperatures, with daytime highs of 29°C (84°F) and nights around 22°C (72°F). Rainfall is at its lowest this month, making it one of the more reliable months to be outdoors.
Rainfall in San Sebastian in January
Conditions tend to be dry and settled, making it a good month for outdoor plans. Historically, approximately 19 days this month are expected to have rain, averaging 34 mm (1.3 in). Rain is frequent but mostly light this month, with brief showers more common than heavy downpours.
Temperature in San Sebastian in January
January tends to be one of the excellent months in San Sebastian, with 29°C (84°F) in the afternoon and 22°C (72°F) overnight. Overall, the month follows a fairly predictable daily temperature pattern. With lows of 22°C (72°F), the nights are warm and generally comfortable.If you favor pleasant temperatures and minimal rainfall, January is one of the best months to visit San Sebastian.
San Sebastian Temperature in January
Min Temperature
22°C (72°F)
Max Temperature
29°C (84°F)
Chance of Rain
62%
Precipitation
34 mm (1.3 in)
Rainy days
19 days
San Sebastian Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in San Sebastian - and find the best time to visit.
Daily Historical Temperatures
50-year average (1977-2026)
Based on our historical records, temperatures in San Sebastian typically stay consistent throughout January, with daily highs averaging around 29°C (84°F). Nights are warm, with lows around 20°C (68°F).
Average temperatures in January
Historical weather records for San Sebastian in January
Browse day-by-day weather records for San Sebastian spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
San Sebastian historical weather extremes in January
Our historical data for San Sebastian spans 2000 to 2025, revealing these weather extremes.
- The warmest day in January was on January 1, 2001, with a maximum of 33°C (91°F).
- The coldest January day was on January 28, 2006, with a maximum of 24°C (75°F).
- Nighttime temperatures dropped to 13°C (55°F) on January 20, 2000, marking the coldest January night on record.
Best Places in Puerto Rico in January
Find out more about the weather in Puerto Rico and which places have the best travel conditions in this month. See all of Puerto Rico in January →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in San Sebastian in January
Warm but pleasant conditions in San Sebastian in January. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Light rain is possible, so consider bringing a small umbrella or rain jacket.
What To Do in San Sebastian in January
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling8/10 -
Walking8/10 -
Camping10/10 -
Outdoor sports8/10
San Sebastian 3-Day Forecast
More climate data for San Sebastian
See the full San Sebastian climate overview or explore weather in Puerto Rico.
Popular in January
Where to go in January - average daytime high across popular destinations.
San Juan
28°C (82°F) Rio Grande28°C (82°F) Aguada
28°C (82°F) Luquillo27°C (81°F) Culebra27°C (81°F) Rincon28°C (82°F) Vieques27°C (81°F) Fajardo27°C (81°F) Bucket list
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