Nipomo, United States experiences average highs of 19°C (66°F) and lows of 12°C (54°F) throughout the year. The climate is relatively dry, with only 3 rainy days per month on average. Sunshine is abundant, averaging about 11 hours per day. Average highs have cooled by 1.0°C (1.8°F) across the available records.
Nipomo, United States Weather & Climate 2026
Monthly climate averages for Nipomo, United States. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: May–Oct 
Wetter season: Jan–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
8.3/10
Best: June, July, August, September, October
UV Index
6
High
Temperature 19°C / 12°C
Feels Like 18°C / 10°C
Rainy Days 3
Rainfall 37 mm
Sunshine 11 h
Humidity 73%
Wind Speed 19 km/h
Dew Point 11°C
Hottest Month
23°C
September
Avg Low16°C
Rain1days
Coldest Month
8°C
February
Avg High16°C
Rain7days
Driest Month
0days
June
Avg High21°C
Avg Low14°C
Windiest Month
21 km/h
April (Gusts 39)
Sea Temperature
13°C – 17°C
Warmest water: September (
16.6°C
)
Worst Time to Visit
Consider avoiding January, February due to less favorable weather conditions.
Sun Position
Sunrise 05:49
Daylight 14.5h
Sunset 20:19
Live conditions—
Nipomo on the map · live conditions
Nipomo, United States
- Continent
- Americas
- Country
- United States
- City
- Nipomo
- Population
- 16.7K
- Elevation
- 101 m
- Coordinates
- 35.04°, -120.48°
Seasonal Breakdown
Spring
Mar–May
Avg High 17°C
Avg Low 10°C
Rain 4 days/mo
Summer
Jun–Aug
Avg High 22°C
Avg Low 15°C
Rain 0 days/mo
3/3 best months
Autumn
Sep–Nov
Avg High 22°C
Avg Low 13°C
Rain 2 days/mo
2/3 best months
Winter
Dec–Feb
Avg High 16°C
Avg Low 9°C
Rain 7 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 16°C / 9°C . Feb: 16°C / 8°C . Mar: 16°C / 9°C . Apr: 18°C / 10°C . May: 18°C / 11°C . Jun: 21°C / 14°C . Jul: 22°C / 15°C . Aug: 23°C / 16°C . Sep: 23°C / 16°C . Oct: 22°C / 14°C . Nov: 19°C / 11°C . Dec: 17°C / 9°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 108 mm. Feb: 76 mm. Mar: 92 mm. Apr: 19 mm. May: 7 mm. Jun: 1 mm. Jul: 0 mm. Aug: 0 mm. Sep: 6 mm. Oct: 11 mm. Nov: 41 mm. Dec: 78 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 75%. Feb: 71%. Mar: 75%. Apr: 73%. May: 75%. Jun: 71%. Jul: 74%. Aug: 75%. Sep: 74%. Oct: 67%. Nov: 69%. Dec: 73%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 19 km/h . Feb: 20 km/h . Mar: 21 km/h . Apr: 21 km/h . May: 20 km/h . Jun: 19 km/h . Jul: 17 km/h . Aug: 17 km/h . Sep: 17 km/h . Oct: 17 km/h . Nov: 17 km/h . Dec: 18 km/h .
Sunshine
Sunshine
Sunshine: Jan: 8h. Feb: 9h. Mar: 10h. Apr: 12h. May: 13h. Jun: 13h. Jul: 13h. Aug: 12h. Sep: 11h. Oct: 10h. Nov: 9h. Dec: 8h.
Sea Temperature
Sea Temperatureswim
Line chart showing monthly sea temperature. Jan: 14°C . Feb: 14°C . Mar: 13°C . Apr: 13°C . May: 13°C . Jun: 14°C . Jul: 15°C . Aug: 16°C . Sep: 17°C . Oct: 17°C . Nov: 15°C . Dec: 15°C .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 4. Feb: UV 4. Mar: UV 6. Apr: UV 7. May: UV 8. Jun: UV 8. Jul: UV 8. Aug: UV 8. Sep: UV 7. Oct: UV 6. Nov: UV 4. Dec: UV 3.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Climate Trends
Average highs have cooled by 1.0°C (1.8°F) across the available records. Average rainfall has remained broadly steady.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Aug 2025 · 23°C | Sep · 23°C |
| Coldest month | Jan 2025 · 7°C | Feb · 8°C |
| Wettest month | Dec 2025 · 102 mm | Jan · 108 mm |
| Windiest month | Feb 2025 · 22 km/h | Apr · 21 km/h |
Month-by-Month Weather Table
January
Fair 
February
Good March
Good April
Good May
Good June best
Excellent July best
Excellent August best
Excellent September best
Excellent October best
Excellent November
Good December
Good | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 16°C / 9°C | 14°C / 6°C | 8days (108 mm) Wet | 7.9h Good | 75% Muggy | 3.5 Moderate | Fair | View Details |
| February | 16°C / 8°C | 14°C / 5°C | 7days (76 mm) Good | 9.1h Good | 71% Muggy | 4.4 Moderate | Good | View Details |
| March | 16°C / 9°C | 14°C / 7°C | 8days (92 mm) Wet | 10h Excellent | 75% Muggy | 5.8 High | Good | View Details |
| April | 18°C / 10°C | 17°C / 8°C | 2days (19 mm) Excellent | 11.6h Excellent | 73% Muggy | 7.1 Very High | Good | View Details |
| May | 18°C / 11°C | 18°C / 10°C | 1days (7 mm) Excellent | 12.8h Excellent | 75% Muggy | 8 Very High | Good | View Details |
| June best | 21°C / 14°C | 21°C / 13°C | 0days (1 mm) Excellent | 13.4h Excellent | 71% Muggy | 8.1 Very High | Excellent | View Details |
| July best | 22°C / 15°C | 23°C / 15°C | 0days (0 mm) Excellent | 13.2h Excellent | 74% Muggy | 8.4 Very High | Excellent | View Details |
| August best | 23°C / 16°C | 24°C / 16°C | 0days (0 mm) Excellent | 12.3h Excellent | 75% Muggy | 7.9 Very High | Excellent | View Details |
| September best | 23°C / 16°C | 23°C / 16°C | 1days (6 mm) Excellent | 11.4h Excellent | 74% Muggy | 6.8 High | Excellent | View Details |
| October best | 22°C / 14°C | 21°C / 12°C | 1days (11 mm) Excellent | 10.2h Excellent | 67% Muggy | 5.5 High | Excellent | View Details |
| November | 19°C / 11°C | 18°C / 8°C | 4days (41 mm) Good | 8.8h Good | 69% Muggy | 3.9 Moderate | Good | View Details |
| December | 17°C / 9°C | 15°C / 6°C | 6days (78 mm) Good | 7.8h Good | 73% Muggy | 3.1 Moderate | Good | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Nipomo are June, July, August, September, October, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Nipomo, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Nipomo is September, with average daytime highs of 23°C (74°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Nipomo is February, with average overnight lows of 8°C (47°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Nipomo is January, averaging 108mm of precipitation across 8 rainy days. An umbrella or waterproof jacket is essential.
Nipomo receives approximately 129 sunshine hours per year. The sunniest month is June with around 13 hours. Based on climate data for Nipomo.
The least favorable months to visit Nipomo are January, February, primarily due to less favorable weather conditions. For the best conditions, consider June, July, August, September, October instead.
The annual average UV index in Nipomo is 6, classified as high. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Nipomo is 73%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Sea temperatures in Summer average 14°C (57°F), which most swimmers will find too cold without a wetsuit.
Average wind speeds in Nipomo are 19 km/h (12 mph). The windiest month is April with peak winds reaching 21 km/h (13 mph) (gusts up to 39 km/h / 24 mph).
Nipomo averages 11 clear-sky days per month with overall cloud cover around 36%. The clearest skies occur in October.
The annual average dew point in Nipomo is 11°C (52°F), which feels pleasant with low humidity. Outdoor activities are comfortable year-round from a humidity standpoint.
Nipomo has a Warm-Summer Mediterranean climate, classified as Csb under the Köppen system. Temperate climates have mild winters and warm summers, with rainfall spread across the year and four distinct seasons.
The 'feels like' temperature in Nipomo ranges from 10°C (50°F) to 18°C (64°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
Yes, June is a great time to visit Nipomo. It earns a climate score of 8.9/10 with Excellent.
For June in Nipomo, pack Sunscreen (SPF 30+), Sunglasses, Comfortable walking shoes. With average highs of 21°C (70°F) and 0 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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