Chill hours in Grabouw, Western Cape: the last 10 winters
Ten seasons of winter chill for Grabouw, Western Cape (-34.1515, 19.0151), calculated from NASA POWER hourly temperatures across 2016 to 2025. Instead of comparing winters yourself or hunting for the nearest weather station, the three standard models for fruit trees and berries are already worked out below.
How the last season compared
The 2025 season delivered 56 chill hours, 25 below the ten-season average of 81. That is a difference of 31%. It was the third-lowest of the ten seasons recorded here. Chill portions, which discount warm spells differently, came to 62.4 against a ten-season average of 61.7.
Ten-season average, low, and high
| Model | Average | Lowest season | Highest season |
|---|---|---|---|
| 45°F Hours Hours between 0 and 7.2°C (32–45°F). | 80.9 hours | 24.0 | 136.0 |
| Utah Weighted bands; warm hours subtract from the total. | 557.2 units | 305.0 | 821.5 |
| Dynamic Fishman–Erez model; handles warm spells. | 61.7 portions | 47.3 | 76.9 |
45°F Hours and Utah are counted over 1 May – 31 August, the Southern Hemisphere equivalent of the UC Davis 1 November start. Dynamic is counted over 1 March – 30 September.
Season by season
| Season | 45°F Hours | Utah units | Chill portions |
|---|---|---|---|
| 2016 | 86 | 491.5 | 58.3 |
| 2017 | 127 | 569.5 | 61.2 |
| 2018 | 72 | 449.5 | 61.3 |
| 2019 | 24 | 305.0 | 47.3 |
| 2020 | 73 | 447.5 | 57.2 |
| 2021 | 136 | 707.5 | 67.0 |
| 2022 | 35 | 441.0 | 58.4 |
| 2023 | 85 | 821.5 | 76.9 |
| 2024 | 115 | 667.0 | 67.4 |
| 2025 | 56 | 672.5 | 62.4 |
Which fruit varieties suit Grabouw?
None of the varieties bundled with ChillCast fit an average of 81 chill hours here.
Station data for Western Cape
NASA POWER is a grid estimate. For measured station data and local chill guidance, see Hortgro: chilling units, temperature, and rainfall per deciduous fruit production region.
Nearby locations
- Ceres, Western Cape — 91 km
Track this season in ChillCast
ChillCast tracks this season's chill for Grabouw, Western Cape on your iPhone and compares it with the ten-season average above.
Generated
This page was generated on 2026-09-06.
About this data
Values are NASA POWER regional estimates (about 0.5° grid), not orchard measurements. Check your local extension service for station data.
Source: NASA POWER hourly 2-metre air temperature (MERRA-2). NASA does not endorse ChillCast.