Current Conditions

San Sebastián, Retalhuleu

73°F23°C

Cloudy

Wind

E 2 mph3 km/h

Humidity

92%

Cloud Cover

99%

As of Wednesday, September 23, 2026 at 3:58 AM CST

Today's Outlook

Day

Overcast and warm, with a high of 79°F26°C and morning low of 72°F22°C. Light wind from the SSE around 2 mph4 km/h. Heavy, humid air.

Night

Overcast, with a low around 73°F23°C. Light wind from the E around 2 mph3 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Cloudy	High 79°F26°C	Low 72°F22°C	Precip 1.67 in42.4 mm—	Cloud 98%	Wind SE 2 mph3 km/h	Wednesday: Overcast and warm, with a high of 79°F26°C and morning low of 72°F22°C. Light wind from the SSE around 2 mph4 km/h. Heavy, humid air. Wednesday Night: Overcast, with a low around 73°F23°C. Light wind from the E around 2 mph3 km/h.
Cloudy	High 81°F27°CFeels 87°F30°C	Low 72°F22°C	Precip 1.04 in26.4 mm—	Cloud 95%	Wind SE 2 mph3 km/h	Thursday: Overcast and warm, with a high of 81°F27°C and morning low of 72°F22°C. Light wind from the S around 2 mph4 km/h. Heavy, humid air. Thursday Night: Overcast, with a low around 72°F22°C. Light wind from the ENE around 2 mph3 km/h.
Cloudy	High 81°F27°CFeels 87°F30°C	Low 72°F22°C	Precip 0.81 in20.5 mm—	Cloud 95%	Wind ESE 2 mph4 km/h	Friday: Overcast and warm, with a high of 81°F27°C and morning low of 72°F22°C. Light wind from the SSE around 3 mph5 km/h. Heavy, humid air. Friday Night: Overcast, with a low around 72°F22°C. Light wind from the ENE around 2 mph3 km/h.
Cloudy	High 82°F28°CFeels 87°F31°C	Low 72°F22°C	Precip 0.47 in12 mm—	Cloud 97%	Wind ESE 4 mph6 km/h	Saturday: Overcast and warm, with a high of 82°F28°C and morning low of 72°F22°C — feels like 88°F31°C. Light wind from the SE around 5 mph8 km/h. Heavy, humid air. Saturday Night: Overcast, with a low around 72°F22°C. Light wind from the E around 3 mph5 km/h.
Cloudy	High 80°F27°C	Low 72°F22°C	Precip 0.44 in11.1 mm—	Cloud 93%	Wind ESE 3 mph6 km/h	Sunday: Overcast and warm, with a high of 80°F27°C and morning low of 72°F22°C. Light wind from the SE around 4 mph7 km/h. Heavy, humid air. Sunday Night: Overcast, with a low around 72°F22°C. Light wind from the E around 3 mph4 km/h.
Cloudy	High 82°F28°CFeels 87°F30°C	Low 71°F22°C	Precip 0.39 in9.8 mm—	Cloud 88%	Wind SW 2 mph4 km/h	Monday: Overcast and warm, with a high of 82°F28°C and morning low of 71°F22°C. Light wind from the SSW around 3 mph4 km/h. Heavy, humid air. Monday Night: Overcast, with a low around 72°F22°C. Light wind from the NNE around 2 mph3 km/h.
Cloudy	High 83°F28°CFeels 89°F32°C	Low 72°F22°C	Precip 0.48 in12.1 mm—	Cloud 80%	Wind WNW 3 mph4 km/h	Tuesday: Mostly cloudy and warm, with a high of 83°F28°C and morning low of 72°F22°C — feels like 90°F32°C. Light wind from the W around 3 mph5 km/h. Heavy, humid air. Tuesday Night: Overcast, with a low around 72°F22°C. Light wind from the NNW around 2 mph4 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 23	79°F26°C	72°F22°C	1.67 in42.4 mm· —	98%	Cloudy	SE 2 mph3 km/h
DayOvercast and warm, with a high of 79°F26°C and morning low of 72°F22°C. Light wind from the SSE around 2 mph4 km/h. Heavy, humid air. NightOvercast, with a low around 73°F23°C. Light wind from the E around 2 mph3 km/h.
	ThursdaySep 24	81°F27°C Feels 87°F30°C	72°F22°C	1.04 in26.4 mm· —	95%	Cloudy	SE 2 mph3 km/h
DayOvercast and warm, with a high of 81°F27°C and morning low of 72°F22°C. Light wind from the S around 2 mph4 km/h. Heavy, humid air. NightOvercast, with a low around 72°F22°C. Light wind from the ENE around 2 mph3 km/h.
	FridaySep 25	81°F27°C Feels 87°F30°C	72°F22°C	0.81 in20.5 mm· —	95%	Cloudy	ESE 2 mph4 km/h
DayOvercast and warm, with a high of 81°F27°C and morning low of 72°F22°C. Light wind from the SSE around 3 mph5 km/h. Heavy, humid air. NightOvercast, with a low around 72°F22°C. Light wind from the ENE around 2 mph3 km/h.
	SaturdaySep 26	82°F28°C Feels 87°F31°C	72°F22°C	0.47 in12 mm· —	97%	Cloudy	ESE 4 mph6 km/h
DayOvercast and warm, with a high of 82°F28°C and morning low of 72°F22°C — feels like 88°F31°C. Light wind from the SE around 5 mph8 km/h. Heavy, humid air. NightOvercast, with a low around 72°F22°C. Light wind from the E around 3 mph5 km/h.
	SundaySep 27	80°F27°C	72°F22°C	0.44 in11.1 mm· —	93%	Cloudy	ESE 3 mph6 km/h
DayOvercast and warm, with a high of 80°F27°C and morning low of 72°F22°C. Light wind from the SE around 4 mph7 km/h. Heavy, humid air. NightOvercast, with a low around 72°F22°C. Light wind from the E around 3 mph4 km/h.
	MondaySep 28	82°F28°C Feels 87°F30°C	71°F22°C	0.39 in9.8 mm· —	88%	Cloudy	SW 2 mph4 km/h
DayOvercast and warm, with a high of 82°F28°C and morning low of 71°F22°C. Light wind from the SSW around 3 mph4 km/h. Heavy, humid air. NightOvercast, with a low around 72°F22°C. Light wind from the NNE around 2 mph3 km/h.
	TuesdaySep 29	83°F28°C Feels 89°F32°C	72°F22°C	0.48 in12.1 mm· —	80%	Cloudy	WNW 3 mph4 km/h
DayMostly cloudy and warm, with a high of 83°F28°C and morning low of 72°F22°C — feels like 90°F32°C. Light wind from the W around 3 mph5 km/h. Heavy, humid air. NightOvercast, with a low around 72°F22°C. Light wind from the NNW around 2 mph4 km/h.
	WednesdaySep 30	84°F29°C Feels 90°F32°C	71°F22°C	0.41 in10.5 mm· —	65%	Partly Cloudy	WNW 4 mph6 km/h
DayMostly cloudy and warm, with a high of 84°F29°C and morning low of 71°F22°C — feels like 90°F32°C. Light wind from the W around 4 mph7 km/h. Heavy, humid air. NightMostly cloudy, with a low around 72°F22°C. Light wind from the NW around 3 mph5 km/h.
	ThursdayOct 1	84°F29°C Feels 90°F32°C	72°F22°C	0.42 in10.7 mm· —	74%	Partly Cloudy	WNW 3 mph5 km/h
DayMostly cloudy and warm, with a high of 84°F29°C and morning low of 72°F22°C — feels like 90°F32°C. Light wind from the WSW around 3 mph5 km/h. Heavy, humid air. NightMostly cloudy, with a low around 72°F22°C. Light wind from the N around 2 mph4 km/h.
	FridayOct 2	83°F28°C Feels 89°F32°C	72°F22°C	0.65 in16.4 mm· —	85%	Cloudy	SE 3 mph4 km/h
DayOvercast and warm, with a high of 83°F28°C and morning low of 72°F22°C — feels like 90°F32°C. Light wind from the S around 3 mph5 km/h. Heavy, humid air. NightOvercast, with a low around 72°F22°C. Light wind from the NE around 2 mph3 km/h.
	SaturdayOct 3	82°F28°C Feels 88°F31°C	72°F22°C	0.69 in17.6 mm· —	88%	Cloudy	SSE 2 mph4 km/h
DayOvercast and warm, with a high of 82°F28°C and morning low of 72°F22°C — feels like 88°F31°C. Light wind from the S around 3 mph5 km/h. Heavy, humid air. NightOvercast, with a low around 72°F22°C. Light wind from the ENE around 2 mph3 km/h.
	SundayOct 4	82°F28°C Feels 88°F31°C	72°F22°C	1.01 in25.7 mm· —	94%	Cloudy	SSE 2 mph4 km/h
DayOvercast and warm, with a high of 82°F28°C and morning low of 72°F22°C — feels like 88°F31°C. Light wind from the S around 3 mph5 km/h. Heavy, humid air. NightOvercast, with a low around 72°F22°C. Light wind from the ENE around 2 mph3 km/h.
	MondayOct 5	81°F27°C	72°F22°C	1.24 in31.4 mm· —	96%	Cloudy	SE 3 mph4 km/h
DayOvercast and warm, with a high of 81°F27°C and morning low of 72°F22°C. Light wind from the SSE around 3 mph5 km/h. Heavy, humid air. NightOvercast, with a low around 73°F23°C. Light wind from the E around 2 mph4 km/h.
	TuesdayOct 6	80°F27°C	73°F23°C	1.23 in31.3 mm· —	96%	Cloudy	ESE 3 mph5 km/h
DayOvercast and warm, with a high of 80°F27°C and morning low of 73°F23°C. Light wind from the SE around 4 mph6 km/h. Heavy, humid air. NightOvercast, with a low around 73°F23°C. Light wind from the E around 3 mph5 km/h.
	WednesdayOct 7	80°F27°C	72°F22°C	1.09 in27.8 mm· —	95%	Cloudy	ESE 3 mph5 km/h
DayOvercast and warm, with a high of 80°F27°C and morning low of 72°F22°C. Light wind from the SSE around 4 mph6 km/h. Heavy, humid air. NightOvercast, with a low around 72°F22°C. Light wind from the E around 3 mph4 km/h.

Nearby Cities

Retalhuleu3 mi4 km Nuevo San Carlos4 mi6 km San Felipe6 mi9 km El Asintal6 mi9 km El Palmar8 mi12 km San Francisco Zapotitlán9 mi14 km

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

Pattern	Example	Description
/weather/{country}/{city}/	/weather/united-states/san-francisco/	City forecast (canonical URL)
/weather/{city}/	/weather/tokyo/	Shorthand — redirects to most populous match
/weather/{country}/{region}/{city}/	/weather/united-states/california/san-francisco/	With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}	/weather/nearby?lat=48.1&lon=11.5	Find nearest city by coordinates
/weather/{country}/	/weather/germany/	Country index — all cities by region

Country and city names use lowercase slugs with hyphens (e.g. united-states, san-francisco). Arbitrary city names are supported — if not in our database, we geocode the name and serve the forecast for that location.

For programmatic access, use theWindBorne Forecast APIwhich returns structured JSON for any coordinates worldwide.

Coordinates: 14.5618°N, 91.6487°W·Elevation: 313m·Timezone: America/Guatemala·Population: 29,167