easeweather.com
Arenal Viejo
Arenal Viejo
GuanacasteGuanacastecaJacóLa FortunaLiberiaLimónManuel AntonioMonteverdeNosaraSan IsidroSan JoséTamarindoUvita More Locations
Costa Rica weather

Weather in Arenal Viejo for January 2026

Your guide to Arenal Viejo weather in January - trends and predictions

    Official Weather Alert ⚠️

  • Vientos intensos y lluvias - See hour by hour.

    • Temperatures

  • Until now, January 2026 in Arenal Viejo has been nearly identical to the historical average, with a temperature of 30.4 °C (showing only a slight deviation of 0.3 °C).

  • In general, the average temperature in Arenal Viejo at the beginning of January is 29.1 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 31.3 °C by the end of January.

    • Rain 🌧️

  • Arenal Viejo experiences moderate rainfall in January, with an average of 7 rainy days and a total precipitation of 14.8 mm.

Average dry days
24
Dry days
Average rainy days
7
Rainy days
Average snowy days
0
Snow days
Average temperatures
30°/23°
Temperatures
Average wind speed
11 km/h
Avg max wind
Average humidity
72 %
Avg humidity

Arenal Viejo Weather January

Move between months or click on a day
December
February
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Light rain shower
29°
2
Patchy rain possible
29°
3
Patchy rain possible
29°
4
Patchy rain possible
29°
5
Light rain shower
29°
6
Patchy rain possible
30°
7
Light rain shower
29°
8
Patchy rain possible
29°
9
Patchy rain possible
30°
10
Patchy rain possible
29°
11
Partly cloudy
30°
12
Sunny
30°
13
Patchy rain possible
30°
14
Patchy rain possible
30°
15
Sunny
30°
16
Partly cloudy
30°
17
Patchy rain possible
29°
18
Light rain shower
30°
19
Patchy light drizzle
30°
20
Light drizzle
30°
21
Patchy rain possible
30°
22
Partly cloudy
31°
23
Patchy rain possible
31°
24
Partly cloudy
31°
25
Patchy rain possible
31°
26
Patchy rain possible
31°
27
Patchy rain possible
32°
28
Sunny
32°
29
Patchy rain possible
32°
30
Sunny
32°
31
Weather Alert Patchy rain possible
29°

Temperatures trend during January in Arenal Viejo

See the weather trend as well as the moving average line

January weather in Arenal Viejo day by day

Click on a date for more information
December February
Date Weather Temperatures Rain UV More
1 Jan. Light rain shower
Light rain shower
 29° /23° 2.5 mm 6
2 Jan. Patchy rain possible
Patchy rain possible
 29° /23° 0 mm 6
3 Jan. Patchy rain possible
Patchy rain possible
 29° /22° 0.4 mm 6
4 Jan. Patchy rain possible
Patchy rain possible
 29° /22° 0.2 mm 6
5 Jan. Light rain shower
Light rain shower
 29° /22° 0.5 mm 6
6 Jan. Patchy rain possible
Patchy rain possible
 30° /22° 0.1 mm 6
7 Jan. Light rain shower
Light rain shower
 29° /23° 0.7 mm 6
8 Jan. Patchy rain possible
Patchy rain possible
 29° /22° 0 mm 6
9 Jan. Patchy rain possible
Patchy rain possible
 30° /22° 0.4 mm 6
10 Jan. Patchy rain possible
Patchy rain possible
 29° /22° 0.1 mm 6
11 Jan. Partly cloudy
Partly cloudy
 30° /21° 0 mm 7
12 Jan. Sunny
Sunny
 30° /22° 0 mm 7
13 Jan. Patchy rain possible
Patchy rain possible
 30° /22° 0 mm 6
14 Jan. Patchy rain possible
Patchy rain possible
 30° /21° 0.1 mm 6
15 Jan. Sunny
Sunny
 30° /22° 0 mm 7
16 Jan. Partly cloudy
Partly cloudy
 30° /22° 0 mm 7
17 Jan. Patchy rain possible
Patchy rain possible
 29° /22° 0.1 mm 6
18 Jan. Light rain shower
Light rain shower
 30° /23° 1 mm 7
19 Jan. Patchy light drizzle
Patchy light drizzle
 30° /22° 1 mm 7
20 Jan. Light drizzle
Light drizzle
 30° /21° 0.4 mm 7
21 Jan. Patchy rain possible
Patchy rain possible
 30° /22° 0.1 mm 7
22 Jan. Partly cloudy
Partly cloudy
 31° /22° 0 mm 7
23 Jan. Patchy rain possible
Patchy rain possible
 31° /23° 0 mm 7
24 Jan. Partly cloudy
Partly cloudy
 31° /22° 0 mm 8
25 Jan. Patchy rain possible
Patchy rain possible
 31° /22° 0 mm 7
26 Jan. Patchy rain possible
Patchy rain possible
 31° /22° 0 mm 7
27 Jan. Patchy rain possible
Patchy rain possible
 32° /22° 0 mm 7
28 Jan. Sunny
Sunny
 32° /22° 0 mm 8
29 Jan. Patchy rain possible
Patchy rain possible
 32° /22° 0 mm 7
30 Jan. Sunny
Sunny
 32° /24° 0 mm 8
31 Jan. Patchy rain possible
Patchy rain possible
 29° /20° 0.3 mm 2.6
Next
Important Notice
Our weather forecast for Arenal Viejo in January is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Arenal Viejo forecast closer to your planned date for the most up-to-date weather information.
Change Month
‹
›

Arenal Viejo in January - FAQ

What are the expected maximum and minimum temperatures in Arenal Viejo during January?

During January, expect a variety of temperatures with highs around 30° and lows near 23°, suitable for diverse activities and preferences.

How much rainfall should be expected in Arenal Viejo during January?

Expect minimal rainfall in Arenal Viejo during January, with a total of 14.8 mm over approximately 7 days. This minimal precipitation is unlikely to significantly impact plans.

What are the typical wind conditions in Arenal Viejo during January?

The average wind speed in Arenal Viejo during January is 11 km/h, suggesting breezy to windy conditions, depending on your activities.

January rainfall patterns in Arenal Viejo

Explore the daily rainfall trends and prepare for Arenal Viejos January weather 💧
Typically, Arenal Viejo has 7 rainy days in January with a total of 14.8 mm of rainfall.

UV exposure in Arenal Viejo during January

Stay informed about UV levels for safe outdoor activities throughout the month of January ☀️

Quick links

More Arenal Viejo weather pages
You are here
Location coordinates Where is Arenal Viejo?

Get accurate weather forecasts for Arenal Viejo, located at latitude 10.465 and longitude -84.848. Stay updated with localized weather information tailored for Arenal Viejo.

Found a mistake?
We appreciate your attention to details. Tell us here.